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Founded in 1898, King Koil got its start selling traditional innerspring mattress. Today, their mattress lineup includes foam, latex, hybrid, and even smart mattresses. King Koil mattresses are sold across the globe in local retailers, although some of the mattress models may be advertised under different names than those found below. Overall, they make comfortable mattresses in a range of price points, but there have been some concerns about durability with some models.
Sleep On Latex is an all-natural and eco-conscious choice if you want all of the benefits of memory foam, but don't want synthetic foams in your house. Latex is harvested from the rubber tree vs other foams that are made with petrolium or harsh chemicals. With two different firmness profiles and Greenguard Gold® certification, most customers report happy experiences with Sleep On Latex with rare complaints about feel and longevity.
Based on our aggregated reviews and our scoring method, we recommend both King Koil and Sleep On Latex in this match up!
King Koil: 8.4/10
Sleep On Latex: 8.4/10
King Koil: 8.5/10
Sleep On Latex: 8.2/10
King Koil: 8.2/10
Sleep On Latex: 8.4/10
No Back Pain:
King Koil: 8.5/10
Sleep On Latex: 8.2/10
King Koil: $999-$6299
Sleep On Latex: $799-$1549
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Sleep On Latex:
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With good data from sleepers, you can discover which mattress is best for you. That said, it isn't always easy to stay focused through all the noise from other brands. These mattresses are given mixed reviews by customers. Some sleepers are extremely comfortable, but others aren't as happy.
Most customers describe these mattresses as supportive, which means they do well aligning the spine per their firmness level. That said, there are a few people that have reported issues, 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 experience any issues when sitting on the side of the mattress.
Bowling Ball & Density Tests
In density and bowling ball tests that measure even support throughout the mattress, these mattresses are well supported throughout the surface. That said, some have had issues with support over the long term, so make sure it works for you before purchasing.
A mattress that has good longevity can save you thousands. But as companies compete for profits, everything from clothes to mattresses wears out faster. These mattresses, specifically, have mixed ratings when it comes to longevity. Mattresses affect everyone differently and some felt happy with the long term comfort, but others were not so sure. Do some additional research on your mattress choice to make sure it fits with your body.
Getting a sense of how customers feel about mattresses can direct shoppers towards good options. Unfortunately, customers don't always have good things to say about these mattresses. Some feel cozy and comfortable, but others don't feel that way. If you are pondering buying one, take a look below for more specifics.
Customers report that these mattresses don't offer the kind of lasting support that some of the other brands may. Though there are some that find these mattresses good for them, if you are heavier in build, make sure to read the reviews before buying.
For those that are excited about getting good edge support, you may want to take a look at the reviews as these mattresses have mixed reviews about edge support.
Having a mattress that lasts is one of the most important factors to sleepers. We all want it to be just as comfortable at the beginning as it is a decade later. Sadly, not everyone has experienced great durability with these mattresses specifically. If you are considering buying for nightly use, read the reviews to make sure it will work with your body before buying.
This mattress is comfy! It's not too firm and not too soft. I love it! I was a little nervous before I bought it because the price is so low. Once I went in the store and tested it out, I knew I was going to get my monies worth. Granted I've only had it for about a week now, even my boyfriend has confirmed it's super comfortale. Get it while it's on sale.View More Reviews
I bought the twin mattress and much to my dismay there was about a 4 inch gap between the mattress and my bed frame. After measuring the mattress I realized it was only 36 inches wide, not the standard of 39 inches (despite the website listing it as 39 inches wide). I finally got a hold of the manufacturer and they said that their twins are "intended" to be 38 inches wide but that each one can differ by up to two inches. So you're basically left with a mini-twin. I will be returning this.
It's pretty comfy for the price but honestly I could have gotten cheaper at another matress store, definitely shop around more. It's not very thick and the euro top seems like it will be flattened very easily I give it maybe a year before it starts losing its comfort completely
My first set of guests found this to be very comfortable. I slept in the guest room to try it out and found it very comfortable. I am very pleased with this purchase and will purchase future items.
Nice product at the right price. My child needed a mattress for a new college apartment. We saw many options and even ran into a manufacturers rep at the store who helped us with good advice. As usual, the experience was great
love this mattress very comfortable the never disappoint
Great price and such an amazing mattress. The level of comfort is undeniable. I'm very happy with this product and would recommend it in a heartbeat.
This mattress was purchased for a bedroom that is only used for guests and when child is home from college. The mattress is very comfortable and the price is perfect for this situation. We have had it about a week and my kid loves it, it's 12:20 pm now as I write this review and she is still sleeping.
Buying this mattress was an amazing investment. Such a comfortable bed to sleep on and the service and delivery was very prompt and professional.
Very happy with what I bought slept like a baby. The delivery guys came set it up fast. Very happy with the service.
My husband and I are sleeping so much better since purchasing this mattress. It's not too firm or too soft, so you get support without feeling like you're sleeping on a board.
We love our new Mattress! The comfort and quality is unbelievable and for what we paid for it...we just love it!!
I purchased two of these mattress for my boys, without them being there to try them, and they just love it. They said it's so comfortable that it just conforms to their bodies. Mind you my 15 year old is 262lbs and said the bed is like a giant blanket. So hats off for a great product at a reasonable price...
I recently stayed in a bed in a breakfast in Maine--and loved the mattress I slept on. (I've got neck and shoulder issues to the mattress is often crucial.) I found a similar King Koil mattress and Raymour and Flanigan. The price was right; the delivery was prompt. "For this relief much thanks." Happy with my purchse: feels good!
When choosing a bed we needed a firm mattress with back support for me but yet some cushioning for my husband and the King Koil Perfect Response Elite Lakeside Pillowtop was "the perfect" choice. Very pleased with our decision and we even received next day FREE delivery - very nice!
I love my new mattress -and the service that came with it.
The bed is great. It came when they said it would and the sales person was wonderful in working with our family.
Bought this for my guest bedroom and it was given an A plus By my first guest. She couldn't believe it was a firm mattress. Would highly recommend.
WE NEEDED A FIRM MATTRESS AND THIS IS PERFECT! NOT ONLY IS IT EXACTLY WHAT WE WANTED THE INSTALLATION WAS WONDERFUL. WE NEEDED SLATS FOR SUPPORT AND THE DELIVERING TECHS DID IT ALL WITH NO PROBLEM. SALES PERSON WAS WELL INFORMED AND ANSWERED ALL OF OUR QUESTIONS. FLO L
I have a California King Mattress and it is the best.... I was not sure of down sizing to a Queen Mattress, but I must say that it was the best choice I love the way my body rest and the best part is that my husband and I are know closer....
THE MATTRESS AN BOX SPRING I PURCHASED WAS JUST EXCELLENT. ITS MEETS ALL MY STANDARDS FOR COMFORT .THE SALES PEOPLE WERE JUST GREAT HELPING ME FIND THE RIGHT ONE . I HIGHLY RECOMMEND MY CHOICE.AND THE STORE LOCATION ON CROPSEY AVENUE
It's hard to get out of bed after sleeping on this very comfortable mattress. You look forward to relaxing at the end of the day. I like it very much. Keep in mind, coupled with the box spring, it is very high. Can't go wrong with this one, unless you like it extremely firm. It has the right kind of firm but soft too.
Very happy with our purchase! Bed is comfortable. Not too firm, not too soft. Great quality for a great price!
The mattress is very comfortable. It's the best sleep I've had in a long time. It is a 5 star hotel quality mattress. I'm in love. I must stress that the hubby that works at night and have Insomnia also agreed that his sleep has been much better. Thumb's up.
I absolutely love my new bed. Best experience it's comfortable for my back after I come home from work cause I work 19 hours of the day doing labor and I just needed a new way to sleep. This is one of the most comfortable beds I've ever slept in and I highly recommend it to everyone.
The store was great the product was well priced and it was a convenient purchase. Loved the salesmen [Associate name removed].
This mattress has just enough firmness topped with a pillow top that has just enough softness! The price is perfect and the customer service was out of this world. No one trying to force me to the most expensive products in the store.
I am very much enjoying my new mattress. I was afraid it might be too soft but I'm glad I went with the softer mattress over the more firm mattress. While this is soft, it is still very supportive. This mattress is great quality for a good price.
great mattress sleep like a baby love it so much it is great
Best decision i made for my son he loves his new bed. Raymour and flanigan alway have good quality furniture which last a long time. I know when i shop with them im getting good stuff.
I needed a mattress for my fathers spare bedroom so I had a place to sleep when I visited. I didn't want to spend a lot but I wanted something that was nice and comfortable. This mattress is it! I have slept great when visiting him now and the Sales associate Tom P. in Clifton Park listened to my needs and took care of everything! Thank you Tom!
very comfortable but still with support!! Very happy!!
This mattress was purchased for a guest room and has only been slept on once with a report that is was very comfortable. The salesman was very helpful and polite. The delivery team were very helpful and delivered quite timely
I really like this mattress. It's really comfortable and it feels like I'm sleeping on a cloud.
My old mattress was still in good looking shape, but had outlasted the years I needed an extra firm mattress. My new King Koil plush is so comfortable, I sleep right through the night. Both my husband and I are well pleased with this purchase.
Mattress is unbelievably comfortable. My wife and I love it so much.
So far so good! Great price for the quality. I'll write another review after about a month or so
I am so happy with my purchase. I haven't slept this well in a long time. I definitely Recommend this mattress. The salesman was very knowledgeable and he listened to my needs.
I am very happy with my king coil mattress purchase. In the past I have always bought Sealy's. It is very comfortable and I am happy with it. Also the service at the store and the delivery was very good. I am also very happy with the guarantee on the mattress.
Mattress after the first night of sleep had a indentation in it already. Was or is not as comfortable as I expected.
We had a very firm serta icomfort that hurt my hips. I'm a side sleeper. Last year we added one of the latex toppers. That helped, but not enough. We recently got a medium mattress and are using it with the topper. It has been great!View More Reviews
The firm is fit for us. I am pregnant, this one helps a lot
It’s a great mattress though mine only is about 8” since the wool and cotton has not yet full expanded. I have great sleep at night, no aches or pains.
We have ordered 3 queen size beds for our new home. Not only do we love the mattresses or guests do too! We also ordered 4 deluxe pillows, which we are not as happy with. They are too thick which make them uncomfortable.
We purchased the firm latex mattress. It is very firm, but we are comfortable on it. As has been mentioned in other reviews, there is a smell to the mattress. It is going away over time, but some people might find it objectionable. It is also a heavy mattress. We purchased it for our boat and there are storage lockers in the platform on which the ...Read Moremattress lays. It is a bit difficult to lift the mattress when we want to access those storage lockers. The mattress was delivered in record time! Read Less
Stands up to all the claims made by it's inventor ! Better more relaxing sleep than on any other mattress, hands down. Also, the price is reasonable and the Customer Service is fantastic. !!
In an attempt to remedy chronic back discomfort & having more preference towards firmer sleeping surfaces... I initially purchased a medium 3" topper to firm up a pillow top mattress. When I received it, found that I would've preferred the firm topper as the medium didnt do much. With plans of returning the topper, I decided to go ahead and pu...Read Morerchase a latex mattress, choosing the 7" firm. Interium I slept on the topper placed on a carpeted floor. Those few nights were THE BEST sleeps I had in a long while. Firm enough for me to feel the support of the floor, yet cradled enough by the topper that it wasnt too hard. Also noticed that I didnt wake up with my normal morning stiffness from the pillow top mattress. Shipping for mattress was just as quick as the topper. Upon opening there was a farm animal smell mixed with latex, which was strong enough to be off putting to me. I also noticed sagging in the middle of the mattress once it was laid onto my platform bed. I phoned the company & the customer rep assured me that it would take a few days to a week for the mattress to full expand to its capacity; and if it didn't, they would ship a new mattress. I found the firm to be TOO firm(I'm a side sleeper) & bouncy, so I put medium topper over it. I felt like Goldilocks, it was just right!! Even masking the zoo smell from the mattress. Now having slept on the mattress & topper for nearly 2 weeks, I have to say that I am getting some of the best nights sleeps ever!! Even my housemate commented how comfortable it is to lay on. So I wont be returning the topper, happy to know that if I go thru a phase of needing more firmness, I can always remove it. Oh, I also noticed that the animal smell as calmed down a lot, needing to place my nose close to mattress to detect. I do wish the mattress had handles. I am very happy with my investment, 3 stars for now, will return after 6 months with an update; as only time will tell how well they both hold up from use. Read Less
Solid, way to firm. Will probably return.
Best mattress my wife and I slept on in years. Everyone needs one!
I recently bought a 9 inch Pure Green Natural Latex Mattress and am very happy with it. I wanted to avoid the off-gassing of memory foam so I was specifically looking for a latex mattress. I researched most of the other latex mattresses available online and decided on Sleep On Latex because of price and the positive reviews. I purchased the medium...Read More firmness and have found it very comfortable even though I sleep primarily on my side and a soft mattress is generally recommended for side sleepers. I have slept on latex for several years and before buying a new mattress I checked with the place where I had bought my first latex mattress for comparison. Their 7 inch mattress was almost twice as much as the 9 inch one that I bought from Sleep On Latex. I feel that there is no better value than Sleep On Latex. Read Less
Queen medium, back and side sleeper. I have back pain after 6-7 hours every time, despite trying all sorts of positions, a soft latex topper, a soft memory foam topper, and pillows under parts of me. But I spent three nights on a cheap cool mattress at my father's house and I slept like a baby without pain all night. I want to like these latex and...Read More foam mattresses but they just haven't worked. Read Less
Great customer service and the mattress seems like really high quality
I was looking at a Metta and another higher end mattress, but found this brand on Amazon which was at a lot better price than the Metta and the Pure Green brand had a lot of great reviews. I bought the firmest version which is perfect for me. It smelled quite a bit (off-gassing) for about a week, but it quickly dissipated. I bought a Twin XL (for ...Read Morean adult) so I can travel light when I move, but will buy a Queen size when I get to where I'm going. I will buy a Pure Green brand when I do get there as the price is great and it is a comfortable mattress. Read Less
Read a lot of reviews and did a lot of Reddit’ing and couldn’t be happier
This is the best mattress i have ever owned. Its supports my body well and is comfortable too! It is very heavy to move tho.
I got the firm version of this mattress, and it’s great for back sleepers (maybe a little too firm for side sleepers). I’m not giving it five stars because I don’t recall being warned anywhere that the queen size mattress weighs 150 lbs. I’ve since learned that latex is heavy, and I think it’s great for some people. If you’re not on the first floo...Read Morer, you may want to request “white glove” service. Even in the box it took two strong men and me to get it upstairs. I decided to return it, and I’d get the regular instead of the firm if I did it again. I’m opting for a lighter mattress. They offered to let me donate it, but since it’s so heavy I asked that they pick it up. They’re sending people who will carry it back downstairs for me, and they were extremely pleasant and understanding about the return. They’re definitely a quality operation, and I’m sorry it didn’t work out for me. Read Less
The Pure Green is really well constructed from materials that feel durable, especially the primary material, which is a huge slab of latex. I much prefer the feeling of the latex mattress to memory foam, and I like that it's cooler than foam mattresses. Highly recommended.
I bought the medium firmness king size mattress and it is the perfect firmness for me. I have been extremely pleased with my purchase. It arrived very fast from the time I ordered it and removing it from the box and unrolling it was pretty easy. I did have someone help me with that part of it. The quality is excellent and I'm sleeping very well on...Read More it. Read Less
I really, really loved this mattress for the first few weeks...it felt amazing compared to my old bed. Now that I've had it for about 8 months, I'm less sure. I bought the medium firm mattress, 9 inches thick. I waffled between firm and medium, and ultimately chose medium after talking to an employee, because I often sleep on my side and some...Read Moretimes sleep on my back and that was the recommendation. It seems like it has already lost a little bit of it's firmness, which I thought was not supposed to happen. After about 3-4 months I started really wishing I had chosen firm. Hopefully it doesn't soften further. Some Pros: The price! I could not have afforded most of the other brands of natural latex mattresses out there. Also, more comfortable than many other conventional matresses. Another issue is the mattress itself is a little (1-4 inches) narrower and shorter than advertised, than a typical full size bed. Maybe factor the thick wool cover into the advertised mattress dimensions, which seems misleading. I know it's just a few inches but it felt noticably narrower to me than my conventional full mattress. Overall, I'm still undecided. I'm happy to have been able to afford a more eco-friendly and healthy mattress. I wonder if I expected too much, comfort-wise. Since I did love it at first, I would kind of like to try the firmer mattress instead...but am worried I'll just be disappointed again. Read Less
Love the mattress, comfortable, safe, clean!
I bought another mattress identical to one I purchased just over a year ago with SOL, this time for my guest room. My mom is the first to sleep on it and says she has been sleeping great but that it would be enhanced with a little extra cushion from a mattress topper, which I currently have on mine. Though I have not ever slept only on the mattres...Read Mores itself, I do notice a difference in the additional comfort that the topper adds vs the mattress alone. Still, knowing the quality of materials in the mattress provides great peace of mind. I will continue to support this company for their commitment to sustainability, making non-toxic products, US manufacturing, and affordability!! Read Less
It is nice to read reviews that actually are true. My experience has been great with this company and it's customer service. They helped me choose the correct Bed , topper and pillow. I couldn't be more pleased with the Sales Team and the product. Which by the way, is like sleeping on a cloud. The most comfortable bed I have ever had. Thank you
My wife and I loved our old tempurpedic, but started looking around when upgrading to a king size. We were initially attracted by the organic, natural nature of the mattress. It’s significantly less expensive than a tempurpedic or comparable organic option. And having slept on it, we’re done shopping for any other bed. Thank you so much for bringi...Read Moreng us this mattress. Read Less
We bought a 9 in medium density mattress, and added the 3in soft topper. This was not comfy enough for my husband's aches and pains, so we are going to add a 3 in down topper in search of a cloud nine rest for him. I like the mattess with the soft topper, and I like that it's natural, had minimal odor, and that it is not friendly to dust mites.
excellent quality and comfort just as I expected
I bought a queen size, 7" firm and so far it's been great. it is a little firmer than I'd like and I'm exploring options with the company. I may get a topper to soften the experience a little. the product came in the big box and it is heavy. i needed to get my son to help lift it upstairs. and it does have a mild scent from the new zealand sh...Read Moreeep wool cover but it didn't bother me at all. i actually kind of like it. but i actually look forward to going to bed again which was not true of the sleep number bed my wife and i bought 5 months ago. highly recommended. Read Less
Company was great to work with. Fast delivery. Great mattress. Wish we had purchased sooner! Firm support with give and healthy materials. No odor. Best way to understand is to try it! Low risk with their excellent return policy and great customer service.
First impression was very good on the overall quality and comfort of my firm mattress. Very supportive and comfortable. I wanted to wait and see if anything negative showed up, I was wary of the middle sinking in but nothing like that has happened at all. Would not hesitate to buy another one, hope this lasts for years. FYI the firm is just like i...Read Moret says "firm". I use an older 2" tempur pedic topper on it and it seems perfect. So glad I found this quality product. Happy to support a business that makes it's product in U.S.A. Read Less
This mattress is great, we got a medium firmness because so many people said the medium was really firm. I disagree, I think the medium is appropriately categorized and thus we are returning for a firm. It’s super comfy but we have an infant and need a firmer sleep surface. Company is quick to respond and great to work with!
Fantastic mattress! I was very apprehensive about purchasing a mattress online but so happy now that I went with SleepOnLatex. Delivery was straight forward, the unwrapping and installation process was uneventful. The even and comfortable support from the mattress was superb. I told my wife that I felt like I was floating!
Slept on a futon for 2 decades until I got my new latex mattress. Best decision I ever made.
I love my latex bed. I purchased the 9 inch firmer and 3 inch soft topper. Everything is high quality. I mage a V birth bed in our sailboat a decade ago from a king size 6 inch mattress. A local company cut it into 5 pieces that fit like puzzle pieces into more than a king size wide V s shape that was only 18 inches at the feet. I covered it with ...Read Moresilk/cotton blend upholstery. It is a great bed so we decided to get latex for home. It's like it is alive made of a chunk of meat, it's such a natural product. Just amazing stuff! Thank you! Read Less
We bought twin mattresses for our girls. They are super comfy and our daughters have gotten great sleep since they started using them.
We bought the 9” medium mattress with a soft 3” topper. It’s just dreamy! What was great was that the mattress was ready to sleep on soon after unpacking with no off gassing.
I have wanted a natural latex mattress for a few years now. I love the say I feel so refreshed after sleeping on this mattress. The firm mattress is Sooooo comfortable for my wife and I. I will buy another one in the future and will recommend them to my friends.
I am enjoying the new 9” king soft-firmness mattress. However, if you enjoy memory foam, this may not be for you. In fairness to Sleep On Latex, they made that point clear to me when considering my purchase. Latex pushes back more that memory foam, but you won’t sink, either. Adjusting to the mattress has taken time. I am not sure if adding a...Read More topper as others have would improve what I feel is a fairly firm “soft” mattress? I have considered getting a soft topper as I have noted many others have done. Read Less
Got a twin size mattress for my daughter and she has been sleeping very well on it! I got the soft version and feel that it is the perfect firmness for her! Only complaint would be that it is difficult to make the bed, but definately a worthy trade off considering the quality of the mattress. Knowing my daughter is sleeping on a safe mattress is w...Read Moreorth the extra 10 mins it takes to make her bed!! Thank you for making such a great product! Read Less
met my expectations completely at a reasonable price, now I wake up with no back pains. I tried another product with a sleep on for 100 days and return if not satisfied, I returned it after 11 days.
We were happy with the firm mattress, and I'm even happier with the addition of the 2" soft latex topper, which feels like the ideal combination of support and softness. Great products, excellent customer service; highly recommended!
I've only ever slept on one mattress my whole life, so I dont have much mattress wisdom to offer. The mattress was a little firmer than I thought, but I sleep like a baby on it.