Slumber Search is supported by readers. Some links on Slumber Search are referral links. If you use one of these and buy something, Slumber Search may make a small amount of money. More info.
Helix is one of the most innovative companies in the mattress-in-a-box movement. Over the last 3 years, they have been offering fully customized mattresses to customers with their high-tech sleep quiz. Being one of the first to provide dual sided firmness options, they also have made it even simpler for customers to select the right mattress (even if they don't want to use the sleep quiz). With 6 comfort designs to choose from, Helix has really focused on delivering to every type of sleeper.
Naturepedic makes a variety of mattresses for adults and children. Their popularity stems from being an organic mattress maker. What does organic mean in the mattress context? It means that they only use organic textiles (think cotton) and organic foams (think latex). This differentiator is a big plus for those that suffer from allergy sensitivities or have young children that do. You are going to expect to pay a premium for such materials.
Based on our aggregated reviews and our scoring method, we recommend Helix in this match up!
See Our Full Review of Helix
No Back Pain:
Get Yours Now
Customer satisfaction is not always easy to figure out with brands doing lots of work to have superb online reputations. With that said, these mattresses are reviewed highly by customers overall. But, there were some sleepers that disagreed with the feel. so keep reading below to check your body type with the specifications of this mattress!
These mattresses are more supportive than most, which means the support layers of the mattress work with your body to align the spine for most. That said, a few customers have had complaints, so make sure to do research to connect your purchase pick with your body type and sleeping position.
Overall, these mattresses provide a good amount of edge support, which means most don't feel like they will fall off the mattress when rolling close to the edge of the mattress.
Bowling Ball & Density Tests
In tests of the mattress density evenness and firmness, there is good even support throughout. However, some customers have complained about support over the long term, so make sure to browse the reviews before buying.
It is a hard thing to find great products that last over 10 years with constant use. Brands, by and large, go after profits first rather than building something that lasts forever. However, there are still pack leaders out there. These mattresses, for example, do a great job with quality and durability. They should last up to a decade for many sleepers, though those who are of heavier builds may experience them faltering sooner.
Get an Instant Discount for Helix: Up To $200 Off + 2 Free Pillows
Online reviews are a great resource to discovering if a product will work for you. These mattresses are rated very well by customers overall, but there are some that didn't share the same experience. Research more below to see if one of these mattresses will work with your body type.
Mattresses that give good support are oftentimes thought of as firm, but when we talk about support, we're describing support that cradles the body ergonomically. These mattresses are well rated at giving support to the average sleeper, but there are a few complaints about the feel.
Most experience these mattresses as having desirable edge support, which preferred for those that like to sit on the edge of the bed or like to lie towards the sides of the mattress.
Bowling Ball & Density Tests
The bowling ball test is useful for measuring if a mattress will give a good surface to support the spine. These mattresses are supportive to most sleepers overall, but there are a rare few who report feeling some discomfort.
It is extremely important for shoppers to find a durable mattress, but some brands are not as focused on it as they should be. That said, these mattresses are better than average when it comes to durability. Most folks are still comfy in their mattress after 5 years, but some who are heavy or use their mattress above average will find that their mattress is not as durable.
My helix isn't perfect but it's a whole lot better than what I was sleeping on before. After a couple months I've noticed a little sagging on the side I typically sleep but overall I love my mattress, sound investment.View More Reviews
The mattress is fine, it's pretty hard so we had to put another foam mattress on top. Also, I move alot when I sleep and my husband can still feel my movement. I am not sure this mattress was worth the price, but it's ok I guess. I probably wouldn't recommend it to anyone.
we just spent a week in another "custom" bed and was so happy to be back in our HELIX bed. These new beds are so dang hot, I hate it. BUT not our HELIX. Happy mamma to be back in her cool bed. Thank you.
we just spent a week in another "custom" bed and was so happy to be back in our HELIX bed. These new beds are so dang hot, I hate it. BUT not our HELIX. Happy mamma to be back in her cool bed. Thank you.
I was completely unsure if I should try this new bed in a box thing. I took advantage of a sale and had it in a couple of days. I set it up in the morning, hoping any off-gassing would be done by bedtime, to my surprise, there was none. The bed was/is super comfortable, I'm glad I took the chance. My only complaint would be I had to figure out how to dispose of my old mattress. Highly recommend!!!
We are on our second full month of sleeping on this amazing mattress. No issues of being too hot. Very comfortable.
Oh my gosh, we LOVE our new Helix mattresses! We bought another brand about 10 years ago, and hated it after only a few months. This time, we did our research more carefully, and also made the decision to go with two XL twins pushed together, instead of a king. That way, I could get my mattress my way, and he could have his softer. We have slept better than we have in years! Plus no sagging in the middle ... easier to move ... no movement when one of us gets up in the night ... I only wish there were some kind of special headboard so we could slide them apart more easily when we change the sheets. I know I'm gushing, but I can't believe what a difference having a good mattress makes. Kind of fun to unpack, too. ;-)
Comfort galore, buy one and you will be sleeping on a cloud.
This bed is no joke. We actually had similar styles and got a blended bed. We have never slept better. A bed made for your weight, height, and position...how could it be better?
We purchased a Helix a few months ago and so far we love it it's comfortable and doesn't sleep hot. We also go the pillows that are cool to the touch which helps me fall asleep quicker
We ordered the soft and it was too stiff.
This mattress didn't end up being the one for us however I thought it was important to say how easy the experience was. I anticipated some push back when I started the return process. The Helix rep was very professional and the return process was easy and seamless. You can buy this mattress worry free. I would recommend anyone looking for a new mattress to give Helix a try.
First few days took some adjusting but after that I was fast asleep in minutes
This mattress is a dream come true. I can sleep on my back and sides without pain. Although it was a little stiff at first, Helix sent me a topper for it which changed everything. If you like the soft layer of a topper, choose a softer option when building your bed and you won't need the topper :-). If you are not convinced, try it. It's worth the 100 day trial!
Arrived damaged. lots of back and forth as to either send back or donate. The donation process is complicated and now the time is expired for that. Not the best experience and I now have a damaged product.
We have a vacation home by the sea, so lots of summer family visitors, everybody has uniformly loved it, we love the fact that it's square till the edge with none of the usual round off that make you feel like your falling out of bed when your near the edge.
Soft and comfy upper layer with supportive mid-layer. I've slept like a baby every night.
The Helix mattress arrived as promised. I was able to inbox it myself in a small room, but recommend 2 people. Comfort-wise, the mattress has been too soft. Th reason for this, I believe, is the only flaw in your order system. I was not allowed to adjust the results of my sleep quiz on your site. I almost did not order because of this. This mattress is better than the Nectar I tried, but the your software' results of my quiz are not necessarily accurate.
Great ordering experience. Shipped wuickly and arrived on time. The survey did a better job of matching to my preferences than my wifes. Great feel and support. Edge support is a little lacking, but otherwise i am happy with the results. Def feels better for back sleeping as it feels fully supported. Not quite as good for side sleeping for me but I have wide shoulders and have had a hard time finding a mattress that can do the trick.
Everything is going good. Sleep really well and it has good suppprt. I would probably go a little firmer next time around. The real test will be a year from now to know if it is building grooves.
Wish it was better. Price point is right. Advertised as firm but closer to soft medium. Nice that it was delivered. Not cool at all- despite how it was advertised. Not a stomach sleeper bed, only good night sleeps I get are on my back. You pay for what you get.
After sleeping an a multitude of different mattresses throughout my teens with moving houses and eventually starting college. I can safely say that this mattress has made my sleep an absolute pleasure. To really know that this mattress is for me in all aspects really adds to the value it gives me and for a cost that is much less than other very high end mattresses. Couldn't be happier and hopefully I won't need to change in the near future.
I ordered my mattress too firm but they got me a 2' topper and I sleep wonderfully.
My husband and I couldn't be happier with our purchase! It's hard to get out of bed in the morning because we are so comfortable!!
We are so enjoying our new mattress and foundation! No more aches in our hips and backs. Restful sleep has returned, thanks!
The mattress is too firm for me, not enough sink. It was supposed to be medium soft with lots of sink.
I was really excited to get the new Helix pillow with extra cooling. I sleep hot and I thought it would be awesome!!! Love the mattress so I had high hopes. The pillow itself is comfy, and it's neat to be able to add or remove filling so easily, but the extra cooling is non-existent. I even tried different pillowcases - a low thread count is what they recommended, also tried a bamboo one that was supposed to have extra air flow. Also tried no cover at all (but since you can't wash the pillow, I didn't really want to do that) but it didn't help. I'm still debating sending it back.
I tried the Casper for 90 days and I just couldn't get used to it. Way too firm for me. Replaced it with a Helix and I couldn't be happier! It is the most comfortable mattress I have ever slept on. I can now sleep on my side as comfortably as on my back. The only downside is that it is much harder to get out of bed in the morning.... seriously.
Once I got this bed I finally woke up with no pain what so ever. It definitely takes some getting use to but I highly recommend.
Since we purchased our helix mattress I've had the most restful sleep that I've had in years. We had purchased several other mattresses and with in a short time were very disappointed! Not with our helix! My wife no longer has back pain every morning and neither do I . We awake feeling rested and ready to start our day!
We have had our Helix blended mattress for 7 days. How refreshing to wake up without any back pain or aching muscles. The turnaround time from order to deliver was so fast! I'm so glad we ordered it.
I love the bed. Best sleep I have have in so many years. But when I ordered I originally looked at a king and wanted to order a cali king. But some how when I placed the order it was the original one that got pushed through so I got a king. Other than that mix up I am very happy with it.
Had pain with last bed switched to this one my back feels great now I have had it for 8 months and it's great
We needed to replace our 12-year-old mattress and decided to try the online experience. After some research, concluded that Helix was the right company. Totally liked the sleep survey to customize the mattress. Was really fun to unbox and watch it "come to life". The first night was awful. Then it got a little better but felt like sleeping on a board. So I decided that instead of throwing in the towel (because support is good for you), we'd explore other options. Went on Amazon and bought a down alternative feather bed topper for like $100. Made all the difference in the world. Now we have a good solid mattress AND a great pillow top.
Arrived quickly. Set up was a 5 minute process with most of that time getting the mattress out of the box. Fully relaxed into it's full loft by the end of the day. About two days with no sheets before I noticed the scent had disappeared. Was replacement for guest room but I've napped on it a few times and thought its was perfectly comfortable.
Before we got this mattress, I was waking up 10-15 times most nights, and we had a memory foam mattress (although it was used and we didn't know the age). I also had a lot of trouble with severe temperature changes at night, which would keep me up. With the helix mattress, except for a bathroom trip, I often will sleep through the night!!! I cannot believe it. Truly.
Pretty good. Hot at first but seems to have improved
We gave the bed nearly 100 days before deciding it was not the mattress for us. How dors one really know what configuration is right for them! The one thong we got right was the sleep cool feature. The bed seemed way to firm and yet seemed to cause hammocking. We tried several layering options on top of the bed with some success. Thank you Helix for always answering my questions, your customer support was much appreciated.
How to describe? Not like sleeping on a cloud, because clouds look lumpy. How can a mattress feel both firm and cushy? Don't know--but it is. My dog likes it, too.
I just got it out of the wrapping last week so I'm sure my body just needs some time to adjust or whatever. I've heard nothing but positive reviews.
We love this mattress. I was very worried about buying a mattress for my 2 year old because in the past when I've bought traditional mattresses, the off-gassing took months (that was before I knew better about the horrible chemicals in mattresses). My son had a Naturepedic crib mattress and the transition to the Naturepedic twin mattress was a good choice. When the mattress was delivered we set it up in his room and he was able to use it that very night. No off-gassing horrible chemicals, no bad smells. What a relief! I'm very sensitive to chemical smells so I was happy to not have to deal with that here. We started off on the firm side of the mattress for my 2 year old, but it was very hard. He's been sleeping on the firm side for 1 month, but he keeps waking up at night. We also found that he was trying to put his entire body on his pillow, so we thought he would prefer a softer feel. A few days ago we flipped it over to the quilted side and that feels much better. We still need to get a waterproof pad for it, since the quilted side is not waterproof and he's not yet potty-trained. I would not hesitate to purchase this mattress again. It was very expensive, but if he uses it for 10 years, that's only $75/year. Well worth the peace of mind.View More Reviews
I was nervous when I purchased this mattress because many reviews say it is too firm. Is it firm? Yes. Uncomfortable? No. My son went from a conventional plastic-y crib mattress to this mattress. This one is considerably softer and more comfortable. I lay with him at night as he falls asleep, and I am not uncomfortable on the mattress. I have had no complaints. In fact, we are thinking of buying one for each of our other children. This is a great mattress and is one of the most affordable non-toxic mattresses available. It is firm but not uncomfortable. I highly recommend!
This is a fantastic kid's mattress that made for a seamless transition from the Naturepedic crib mattress. If you're unfamiliar with these mattresses and are accustomed to soft, plush "grown-up" mattresses, you may find this too firm or too stark. However, it's perfect for a kid's growing body. There is no worry of off-gassing or chemical smells - it came right out of the box and onto the bed with no airing out time. The waterproof side is great, with a nice texture that is nothing like a plastic-y waterproof pad. This is a high-quality mattress made from high-quality materials that will leave everyone sleeping well at night!
Ordered this mattress after much research and debate. I am happy with my decision. The mattress was not too firm as other reviews remarked, and is actually almost softer than I wanted because I was hoping the firmer the mattress the longer it will last. It is certainly much softer than the 2-sided naturepedic crib mattress. I bought this for my son transitioning to a big boy bed and expect it to last through childhood. I believe it will and it is very comfortable. We are using the waterproof side which I LOVE. It protects the top and sides without having an awful crunchy, noisy sound or feeling. There was a slight natural odor as some commented in reviews but only if you put your nose to the bed and you can't smell it from the waterproof side. Certainly no strong odor or chemical smell. It is expensive, but compared to adult organic, non-toxic mattresses it is much cheaper and I felt was worth the investment for my son's health and my peace of mind.
12/13/2015 Update: After receiving an email from Naturepedic that the mattress I purchased was defective, I ordered a new one. We've had the mattress for about five months now. No issues with lumpiness. However, I feel like the outer trim of the mattress is starting to loose it's shape/looking bent. I don't believe this is normal wear-and-tear because I've never had this issue with my other mattress. =( I was excited to purchase this matress for my toddler as her new big girl bed; however, I was disappointed with the product for a few reasons: 1) I grew up sleeping on very firm mattresses. I prefer them and enjoy them. Although firm, something about this mattress made it quite uncomfortable. It's just too firm. 2) The discomfort of the firm mattress could be that it feels lumpy. It seems like individual springs can be felt while laying on the bed and shifting positions. 3) The waterproof side of the matress seemed loud. The cover was not taught, so when I moved my arms across it, it was as if I was laying on vinyl plastic that can be heard when moving. I purchased a NP crib mattress and had no problems with its quality; however, the twin mattress was a big disappointment. If you have a recommendation for a quality organic mattress, please share.
I never write reviews but I am EXTREMELY disappointed with this mattress. We've had it for just over a year now and we still have not transitioned my toddler to the bed so this mattress has only been slept on a handful of times by the occasional house guest. When we first received this mattress I noticed that it elevated in the center so it almost felt as if you were rolling down hill on either side of the mattress. I thought perhaps this was because it was new and that it would settle down over time but sadly it hasn't. Also the sides of the mattress are sagging. It's almost as if the side of the mattress totally collapses on itself when you sit on it. I flipped the mattress over to the non-potty training side and it weirdly lumpy. I wanted to love this mattress. I paid more for this mattress than I wanted to because I trusted the brand and I definitely wanted an organic mattress. But I'm sad to say that this mattress was not even close to what we were hoping for. We wanted a mattress our toddler could grow up on, now I'm going to have to buy him a new mattress before he even gets a chance to use it.
Since infancy, my now 3 year-old daughter has slept on a Naturepedic crib mattress in her crib and toddler bed. So when she recently transitioned to a twin-sized "big girl" bed (Charleston Solid Hardwood Platform Bed Frame - Twin Size), Naturepedic was our first choice for a mattress that we knew would be free of chemical flame retardants. We opted for the 2-in-1 mattress instead of the single-sided one for $100 cheaper because we knew from experience (with the crib mattress) that it's 100-times easier to wipe up accidents from the waterproof fabric of the mattress itself, than to have to remove a separate mattress pad and throw it in the wash. Plus, many waterproof mattress pads are made of PVC/vinyl, a toxic plastic the emits phthalate fumes that you don't want your child inhaling in their sleep! The waterproof side of the Naturepedic mattress is made of food-grade polyethylene, which is non-toxic and doesn't give off any harmful fumes. Yes, the waterproof side of the mattress is somewhat firm, but not excessively so, and most importantly, my daughter has never complained about being uncomfortable. After all, she spent the first 3+ years of her life sleeping on an ultra-firm crib mattress, so she doesn't know any differently when it comes to sleeping surfaces. Plus, pediatricians recommend a firm mattress for younger kids, whose bones and skeletal structures are still developing. Once my daughter is older (and fully nighttime potty-trained!), we'll flip the mattress over and use the quilted side. This mattress was recently put to the test and passed with flying colors! A few weeks after we bought it, my daughter had an upset stomach in the middle of the night. She threw up a total of 4 times, soaking her pajamas and bed sheets, but the waterproof surface of this Naturepedic mattress completely withstood it all. Each time, all we needed to do was to wipe the surface of the mattress with Seventh Generation Disinfecting Multi-Surface Wipes, 70 Count, change the sheets and put her back to bed. We wouldn't have had enough mattress pads to cope with all the throw-ups that she had. In short, this mattress helped make a rough night a little less difficult for all of us. I highly recommend it. Grade: A
Switching to this mattress stopped an allergic reaction I was having to my memory foam mattress (all the chemicals!). So in that respect, 5 stars. But this mattress is very hard, so I had to buy a latex mattress topper to be able to sleep on it.
My 13 year old wanted a really firm mattress, so we bought him this one. He even wanted the firmer side up. That lasted a day. So we flipped it to the "less firm" side, which was still way too hard. The two sides are board v. Heavy blanket on board. We wound up buying him a 3" featherbed. I still find it too hard, but he likes it now, though, and finds it just right. The featherbed made all the difference.
We purchased this mattress for our now 3 year-old son. I have read that sleeping on an extra firm mattress is good for growing bodies, but I must say that as a mother laying next to him at bedtime, it feels a bit uncomfortable. That being said, our son has never complained, and it has been almost 6 months since he started sleeping on it. Naturepedic has a good price for an organic mattress, so we will simply purchase an organic topper for comfort when he needs it.
I really like the idea of this bed and the fact that it doesn't have most of the nasty chemicals in it that other beds do. That said this is not the most comfortable bed. Its heavy and feels bouncy. My little boy doesn't seem to mind it, but it just isn't that comfortable of a bed.
I hate to give a low rating to a company that makes a matress with little or no fire retardants, but, this mattress was very uncomfortable. It felt like an old crib matress. Even on the softer side of the mattress, you could feel every spring.
Great mattress for our 2 year old. No chemical smells, and nice cleanable surface.
This has been great for my daughter. Feels like a regular mattress. It has held up very well, despite my daughter jumping on it at least weekly, and sometimes with her friends (it is on the floor for safety reasons). I would give it 5 stars if it were cheaper....seemed a little bit more expensive than it needed to be.
This is the second time I have purchased this item and I am very happy with it. As described & well packaged. I would recommend this product and seller.
I have three of these that I have purchased over the years for my three kids. Outstanding quality and complete satisfaction. Never had to offgas it. And sleep comfortably knowing my kids are not exposed to harmful chemicals. This mattress is supported by the environmental working group.
Excellent. Item was purchased for 2 year old. Used on the floor (montessori inspired) with a low profile boxspring. Child sleeps well and I've even fell asleep on it. Very expensive but worth the cost. No odors or new mattress smell.
The bed was purchased for my 3 year old granddaughter because my daughter felt it was important for her to have an organic mattress. We chose this one because it was mid-price and had one waterproof side. Also free shipping with Amazon prime! The bed seems to be very supportive, comfortable and quite dense so I imagine it will hold up well for many years.
Bought this for my 2 year old son. There is no chemical smell with this mattress which is 1 reason why I purchased. My daughters mattress from a regular mattress brand was purchased 3 years ago and still stinks like chemicals when I take the sheets and cover off. This mattress is also great with the waterproof side that actually works and is easy to clean. Comfortable and my son loves it
Not for those with aches and pains, but good for kids! We have a twin and a full size of this brand and are very happy. We also bought real mattress protectors since the mattresses are expensive, but so worth it.
Few people realize the dangerous chemicals in traditional mattresses. It may see like a huge expense to spring for the organic mattress, but it's well worth it knowing that your child is not inhaling toxins while s/he sleeps. As far as organic mattresses go, this one is extremely comfortable. The vendor, "Elephant Ears" I think it was called was excellent and offered free shipping, which saved me $150. This was a very good buy. My baby sleeps like a baby in it.
Excellent quality and finish. Perfect for toddler transitioning from naturepedic infant mattress.
Fits great for a 3 year old. No smell as others stated
This mattress is great. We don't think it is at all hard as other reviewers have complained. If you want a super deep pillow top type mattress then this probably isn't the one for you, but for a high quality, comfortable, basic organic mattress this one fits perfectly.
Love Naturepedic! Wish they made a king size!!
I bought these for my twins after they grew out of their cribs. I had also used Naturepedic mattresses in their cribs. These mattresses are comfortable and reasonably priced for organic, chemical free mattresses. I would always recommend this brand and will buy this brand for my bed when it's time to replace our current mattress.
Fabulous bed! Zero odor, soft Quilting, natural materials.
Great service, love these mattresses. Hopefully it lasts 20 years!
A little bit too hard on one side.
I bought two of these mattresses for my daughters (age 7 and 11) thinking that the the firmness shouldn't be an issue for bodies as light as they are. I love the fact that they are organic, and that they have a water proof side which is good for the earlier, bed-wetting ages. However, they are so hard that my daughters complain about them. I tried a thin topper, and that didn't work. I eventually bought a 3 inch organic foam topper for one of the mattresses and that did the trick for my older daughter. However, the cost worked out such that I would have been better off getting an organic foam mattress to start with.
Great mattress, a little on the firm side which is what I was looking for.
I bought this mattress because it was chemical-free, and I feel really good about that. I thought it was hypoallergenic, but when I received it, noticed that it had side vents. When I called the company about this, they tried to tell me that dust mites stay on the top layer only, so they offered a mattress pad. I'm a physician, and I wasn't happy with that response. I had to buy an additional hypoallergenic cover. It's nice that one side is waterproof, and the other side cottony. I've had the mattress for about a year now for my two year old. It sagged a bit immediately, and the top layer is a bit loose. These are made on a one-by-one basis, and made to order, so I guess that's ok. I thought this would last him 'til high school, but now I'm not so sure. It hurts my back to sleep on it because it's rather firm. After a year, it seems to have an odd-rice-homey sort of smell. Not sure I would buy again because of the price. Maybe all natural/chemical free mattresses sag?! I gave it four stars instead of three because at the time of purchase, there were not a lot of options out there for safer mattresses.
This is our second Naturepedic twin mattress, and we've also purchased multiple crib mattresses. We always love them, and feel good about our kids burying their faces in this organic, harsh-chemical free mattress. I read through the reviews, but have to disagree that this mattress is too firm, at least, not for a child. I bought it for my preschooler, and little kids often use firmer mattresses. I've fallen asleep on it multiple times and think it's fine, and my kids sleep well on these. I love that one side is water-proof for now, and that we can flip it over for a softer side for when the kids are a bit older. I have no complaints at all. UPDATE: At age 6, my son did start to complain that his mattress was too hard. It was wonderful to be able to simply flip his mattress over from the water-proof side to the softer side and please him without having to buy a new mattress! I also have to add that Naturepedic stands behind their lifetime guarantee. After less than 6 months, a spring had somehow rotated itself sideways in our second of these mattresses and was poking to the side. We don't know why or how this happened, but we wrote to Naturepedic and sent them pictures, and they immediately sent us a new mattress. No charge, no hassle. Very, very pleased.
It was pretty weird to buy a mattress online, but I had no luck finding a local store that sold organic (or just non-toxic) mattresses. I really wanted my son to have a mattress that wouldn't be harmful to his health. This one fits the bill, and it seems to be the least expensive option out there. The manufacturer's own website has it listed for $100 more than Amazon, plus they charge $75 shipping. I was pleased with Amazon's price and the free shipping (from Pennsylvania to California, no less!) The mattress is firm, but comfortable. My 3-year-old son has been sleeping just fine on it. I took a nap on it one day, and I noticed it was firmer than my own mattress.... but I slept just fine.
I really wanted to love this mattress. Organic was a priority for me and when reading the reviews it seemed perfect. Unfortunately, the mattress I received is hollow. There is absolutely no support in the middle of this mattress and if an adult was to lay on it, it caves dramatically in the center. I have no idea if my particular mattress is defective but I am definitely disappointed in the product.
I did a lot of research on mattresses and the incidences of sids when my daughter was born, and ultimately went with an organic crib mattress. When it came time to getting her a big girl bed, I had a very hard time finding full organic mattresses. Not one store in my entire city sells them. So I turned online, and researched every brand I could find. I needed an organic mattress that was not based with latex, and so many of them are. I'm allergic to latex, and fear my daughter will eventually share that allergy. Naturepedic is the brand I continued to come back to, as the best option on the market. Expensive, yes, but there are others that are far more, and none that are less that are made of cotton and not latex. What made me hesitate the most in my purchase is the reviews that said the mattress was too firm. I looked into organic mattress toppers that could help with that, but even those were a small fortune. Finally, I decided to go with this mattress. So glad I did, excellent choice. It is NOT too firm or too hard, it's extremely comfortable. It's possible that they made changes since some of these reviews were posted, to make it less hard. I have a terrible back & hip, and this mattress is comfortable to me. My daughter absolutely melts into it, and sleeps wonderfully! It had zero smell when we opened it - no off gassing, no need to air it out at all. When reading reviews, read the newest ones first. Because I think changes were made to this mattress to make it even better. For us, it's a non-toxic, organic, comfortable, odorless option for a mattress. I really think this one is your best bet!
I was slightly worried about ordering this mattress after reading a couple of reviews stating it was rock hard. I went ahead and ordered it anyway because my daughter has chemical sensitivities, and this was the least expensive, safest option I could find for her. I am happy to report that this mattress, while firm, is indeed comfortable enough- I actually fell asleep while laying with my daughter at bedtime and had a very restful night. My back and hips also felt great when I woke. My daughter slept like a rock and didn't stir until morning. I also noticed that, while I am usually a mouth breather when I sleep, it was very easy for me to breathe through my nose last night. This could be due to the newness of the mattress and the absence of dust mites, but I think the lack of chemicals is probably a contributing factor (I usually start sneezing whenever I walk into a store that sells new furniture because of the off-gassing chemicals). My daughter's nose seemed to stay clear as well. This was a big expenditure for us, but I'm glad we did it because now we have peace of mind that our little girl has a healthy place to sleep until she reaches adulthood. When we can afford it, I'd love to get a Naturepedic for the master bedroom as well.