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King Koil is a mattress brand that was founded in 1898. It started selling innerspring mattresses, but over the years has expanded to foam mattresses as well. You can find King Koil mattresses across the globe in local retailers. Some of their mattress models may be advertised under other names. Overall, they make comfortable mattresses in a variety of pricepoints, but some may find more value for the materials in other brands.
Level Sleep is an all-foam mattress that features proprietary TriSupport technology that supports the spine using zoned support. The shoulders and hips are relieved of pressure, while the spine is supported by firmer foam. This is ideal for side and back sleepers with back pain and those that are concerned about posture. With data from an independent single-blind medical sleep study, Level Sleep significantly helps lead to more undisturbed sleep.
Based on our aggregated reviews and our scoring method, we recommend Level in this match up!
See Our Full Review of Level
King Koil: 8.4/10
King Koil: 8.5/10
King Koil: 8.2/10
No Back Pain:
King Koil: 8.5/10
King Koil: $549-$3,399
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Looking into customer satisfaction is an ideal way to focus your search for the right mattress. Overall, sleepers feel mixed emotions when it comes to these mattresses. Some found them to be a super comfortable sleep, but others experienced restlessness. Look on below to see what customers say in their own words.
You may think supportive mattresses are always firm mattresses, but when we write about support, we are describing mattresses that support the back independent of firmness. These mattresses are well rated at giving support to the average sleeper, but there is the occasional complaint about the feel.
Most customers find that this mattress has good 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 discovering if a mattress is evenly supportive. These mattresses are supportive to most sleepers overall, but some with wide hips and shoulders may experience some discomfort.
These mattresses get mixed reviews from customers on lasting comfort. We all want to find the perfectly comfortable durable mattress that lasts over 10 years, but sadly, not all mattresses will last as long as you would hope. If you are considering buying a mattress with mixed reviews on durability, do one last review of the return and warranty policies so you are secure in your purchase.
Everyone wants to get to the bottom of which mattresses are best rated, but it isn't easy from just browsing online. Customers are very happy with these mattresses overall according to our analysis. Although you may not experience the same excitement after buying, this provides a solid foundation to look into this brand further. Read on!
Everyone needs better support while sleeping -- it is the difference between waking up refreshed and waking up with terrible back pain. These mattresses provide some of the best support for the spine available on the market.
Amazing edge support is the difference between sleeping wherever you want on your bed or only being able to sleep comfortably in the middle. Luckily, these mattresses offer great and lasting edge support.
Bowling Ball & Density Tests
The bowling ball test is a fun test that reviewers like to do to measure the firmness of a mattress. In addition to firmness, the bowling ball can also measure evenness of support across the surface. These mattresses will offer even resistance, while still remaining comfortable and aligning the spine.
Like all technology, we as customers want products that will last. That said, it can be difficult to know where to find the lasting quality through all the noise of Internet shopping. Even our clothing and bedding doesn't last as long as it used to. All that said, customers say that these mattresses are some of the most durable for the price. They should last at least 7 - 12 years based on normal wear and tear for most sleepers. Also, if you don't like the way your body reacts to the mattress over the short term, you can always get a refund because of the trial policy.
Get an Instant Discount for Level: $225 Off Mattresses - Code SLUMBER225
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.
I had a bad shot mattress. I replaced with the tri support and have slept much better from night one. The mid support area is a little to close to the head for my baby. I have a twin. My abdominal part of my body is a litttle longer than normal and my legs area little short. I would have bought the longer and wider one but don,t have thes space.View More Reviews
The TrSupport Mattress is great! We wake up without back pain. It's just the right firmness and it's really fun to sleep on; raise your head, raise your feet and use the wave to relax awhile before sleeping. Thanks to the technology team for the development of Level Sleep mattress bed. This mattress is made with high grade materials and will last a long time. We may go back and buy the mattress TriSupport Topper for days we want a change of pace to pamper ourselves. We recommend this bed to anyone who wants to Sleep Happy. Thank you.
I really love this mattress, it is very supportive in all the right places. The staff are very helpful.
For years I have had to put a wad of socks under the middle of my back to give me the support I needed to lay on my back. With this mattress I no longer need to do that. I also had issues laying on my left side putting pressure on my hip and making it feel out of joint the next day. With this mattress I have a lot less of that issue as well. I am very pleased with the purchase.
We started sleeping on our luxe mattress 2 weeks ago and couldn't be happier! We previously had a different brand foam style mattress that cost quite a bit more and we are much happier with the Level Sleep product! Thank you JJ and Zach for the awesome service!
We upgraded to a king after having a queen, and couldn’t be happier! This mattress provides amazing back support! I had just gotten shoulder surgery, and as a side sleeper needed something super comfortable for my back - no pain, and love may be converted to back sleeping!
I love this mattress aND the pillow. I feel so much better in the morning when I get up. My neck is happy, my bow back is ready for the day. Three different firmness on the mattress support the different part of the spine. And the design of the pillow fits so well with the mattress. I'm recommending this brand to all of my patients now. And Zach, the sale's rep. he was o thorough, kind, step by step and he answered every single question that I had. (I ask lots of questions... :) so thank you. and I will reach out to Zach sometime next week to sign up the health professionals program for the clinic as well.
Thank you very much for your donation to my sleep following the loss of my home in the Sonoma Fires. I am grateful for your charity. The mattress has been great to sleep on. it was very easy to “install”! thanks again Isa Jacoby email@example.com
LOVE LOVE LOVE this mattress!!! Bought this for a new home in Prescott Arizona and couldn't be more ecstatic!!! Going to buy toppers for all others beds!!!
I have a very sensitive back and I cannot believe that the first night I slept on this mattress I had the best night sleep. It’s seriously the most comfortable mattress I’ve ever slept on! Thank you so much!
Thank you so much for your gift of support both emotional and physically. We are rebuilding our lives after the fire. Having a safe, comforting place to sleep at night has made a huge difference in our healing. Your team took such great care, showed so much kindness, and the mattress has actually helped with a lot of back pain that we were both experiencing previously. Much gratitude! Happy Thanksgiving, we are grateful to you! Kalika and Sean
the mattress isn’t much softer than i expected - but my back ache has gone and we have a restful nights sleep
This is the best mattress I have ever slept on!! Having lost everything in the recent Sonoma County Wildfires, we are so appreciative that you were able to help us. Thank you!
We are one of the many fire victims that assisted in getting a mattress. I can't say enough how much of a relief it was to have one less thing to worry about. Zach was the team member who helped me with our transaction and made everything even that much easier. They are super responsive, personable, and legitimately care about you as a person. The mattress itself is great. Provides support and is just right in firmness. You can't feel someone getting out of bed or rolling over at night wich also allows for the best possible sleep. Having a lot of sleepless nights, this was a very pleasant surprise. THANK YOU LEVEL SLEEP and thank you Zach. Very grateful.
Level Sleep was an incredibly thoughtful and most generous company to donate an amazing mattress for our son after the Northern California fire. We will certainly pass on the wonderful spirit of this company as well as the amazing products they develop at this local company. Thanks Level Sleep! Liz Takano
We have had our Level Sleep mattress now for one week and so far so good. It did take some nights (3) to get used to it and find the "sweet spot" for greatest comfort, but since then, we have slept great and have had no back trouble whatsoever!
I have had back and neck issues for quite sometime. I had no idea what I was missing out on until I slept on the tri-support bed! I am a Northern California fire survivor and the amazingly generous team at Level Sleep Sonoma gifted me a bed. I am forever grateful and will never go back to a standard mattress!!
I love how the mattress supports different parts of the body.
This mattress and pillows are worth every penny. Have been have great night sleep ever since. Should have bought this month's ago. Thank you for everything.
Before we purchased our mattress we had a couple questions about the product so we contacted the company to get more information. They responded right away and answered all the questions that we had. The were super friendly and informative. We purchased the king size mattress and have absolutely fell in love with it. My husband has back issues and this mattress has helped him tremendously! I recommend this bed to anyone looking to get an amazing nights sleep! It is totally worth the investment!
The mattress makes me feel like I'm being cradled in a marshmellow cloud. The support is just right for my girly hips. Really, really comfortable. I'm very pleased with this purchase.
Took a week off and went camping. I was nervous about being away from my mattress, so I bought the Level Sleep Topper to go into the RV. My back never missed a beat. Pain didn't even show its dirty little face. Usually by day three in the camper mattress, it is difficult to get out of bed. This time, woke up just like I do at home.
I'm so grateful my chiropractor suggested this mattress. For anyone who suffers with fibromyalgia, it is an answer to prayer. I also have a herniated disk & OA. This mattress provides the different levels of firmness/softness where they are needed most & I couldn't be happier.
I found Level Sleep through a friend and then was welcomed into their cozy Sonoma home store to one on for style. While the mattress in the store was amazing and is what prompted my first purchase for my new place; it was not until 30 days of incredible sleep that I appreciated the beauty of the TriSupport Mattress and Level Sleep's innovative technology. The stress of moving paired with other life altering events left me quite sleepless, but there was something in the comfort of my Level Sleep mattress that helped me sleep like a baby. More than 120 days in, my mattress continues to provide healing and restful sleep as promised. I am a believer! Thank you.
Recently bought a Level Sleep mattress when it was time to upgrade and we love it. My husband, who is an airline pilot, is sleeping better than ever. Just wish we'd bought them for every room!
I am always trying each night to feel where my body is touching the mattress, and I've normally dozed off without figuring it out. It's so cloud-esque that you can't feel it pushing up against you, you just melt in and then are supported. Loving it!
I am a chiropractor and my patients love the Restore Pillow. They are having better nights sleep on it and it also helps with their neck pain. The mattress is also amazing as well. I highly recommend. Dr. Cobb, Fredericksburg TX
The mattress provides great support and allows for a refreshing night's sleep. It's only been a week but so far so good!
Love the new mattress. It does what you said it would do - support the spine in the midsection and softer places for shoulders and hips.
We were long overdue for a new mattress and are very happy we chose a Level Sleep mattress and pillows. It arrived in a box that was easy to open and allowed for simple set up. We appreciate the different levels of firmness and find our sleep is more restful and in the morning it is easier to get out of bed!
I noticed less tossing & turning the first night I slept on my TriSupport mattress. After a few more nights, I realized I wasn't snoring as much if at all! I like it's firmness and that I don't sink into it but rather sleep on top of it. It's comfortable sleeping on my stomach as well, however, I find I do not wake up on my stomach anymore because I'm quite comfortable sleeping on my back or side. I'm very happy with my new mattress!
Level Sleep products are literally brilliant. They have varying levels of firmness within ONE mattress/mattress pad to properly support your body in different areas no matter how you sleep. My boyfriend prefers a firm mattress and I prefer softer - great, right?! Our mattress was TOO firm for me so we got the Level Sleep mattress topper and both LOVE it. He and I both agree it's the most comfortable bed we have ever slept on hands down. Years ago, we had a tempurpedic mattress which I actually loved but it trapped in heat which the boyfriend did not love and it was still not quite firm enough for his liking. Level Sleep products do NOT trap in heat and provide the perfect firmness in all the right places. Before getting this topper, I was having neck & back pain which has since gone away since I've been sleeping on this. I could not recommend Level Sleep products more. Worth every damn penny. We spend 1/3 of our lives sleeping - give yourself the gift of the frickin best possible most comfortable night's sleep (and naps) ever.
We got the mattress a week ago and have enjoyed every night of sleep since. Wonderful support, especially in the lumbar region, and very nice on the shoulders for side sleeping. The one thing that surprised me was the lack of support while sitting on the edge of the mattress. Not a complaint, just unexpected and took a little getting use to. The ordering process was very simple and delivery was quick. Getting the bed out of the packaging was easy as well, and very cool watching the compressed mattress come to life. I would recommend the mattress and company to anyone looking for a new mattress.
I bought a good mattress that was just too firm with no give. The Level Sleep Topper performed just as I had hoped. It truly does live up to what is advertised!
Incredible experience. Company treats customers with courteous, professionalism and above all the understanding of each individual needs. The mattress topper I bought is of high quality and craftsmanship and arrived at my front door, free shipping. Quick delivery, and as promised. I would definitely recommend this company to my family and friends.l
Best mattress for the back I ever had.
I had just bought a Casper mattress before being presented with the level sleep concept. So I ordered a cover. Incredible results. While Casper was decent, I now have enjoyed the deepest uninterrupted sleep in years !!! I highly recommend this product.
We bought this mattress based off our chiropractors recommendation d and we absolutely love it.
I have a chronic lower back pain so I tried several other options before Level Sleep. And I can surely say that Level Sleep totally works for me. This is the first mattress which really relieves the lower back pain. I feel better even throughout the day. Thank you! I didn’t think this was even possible.
My mattress topper is wonderful although it took almost a week to adjust to it. My aches and pains are not as bad. Thank you for making a great product.