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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 than are found below. Overall, they make comfortable mattresses in a variety of price points, but there were some concerns about durability with some models.
PerformaSleep™ is a mattress maker that ships a mattress in a box that focuses on helping athletes and the highly active have a better night sleep so that they can recover properly. They use an all-foam design with the addition of technologies like copper-infused foam. Overall, their customers have good things to say about PerformaSleep.
Based on our aggregated reviews and our scoring method, we recommend Performasleep in this match up!
See Our Full Review of Performasleep
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-$3399
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Some are very happy with these mattresses., but others have had mixed experiences. Although there were good ratings overall, there were also some poor ones. Research more below for information on the specifics.
Having mattress support is important to having a healthy night sleep. These mattresses are above average in their supportiveness. It is important to note for those that suffer with spine alignment or tossing and turning. Most customers report that these mattresses do a decent job providing support.
Edge support is the measure of supportiveness along the sides of the mattress. Reviewers describe these mattresses as having good edge support overall, but some folks may notice more sinking along the side of the mattress.
Bowling Ball & Density Tests
The bowling ball test is great for those that want to understand if a mattress is going to be firm or soft. It is also a solid test for understanding evenness of support throughout the mattress surface. Overall, these mattresses will give a good amount of evenness of support.
Having a mattress that is highly durable can save you thousands. Sadly, in this day and age, everything from bedding to clothes degrades faster. Customers give these attresses mixed ratings on durability. Each person is affected differently by their mattress and these may be fine for you, but others have had complaints long term. Make sure to read more about these before purchasing.
Getting to the bottom of customer satisfaction is painstaking for the average shopper, especially with brands cleaning their online reputation. With that said, these mattresses are reviewed highly by customers overall. However, there were some folks that didn't feel the same way about the feel. so keep reading below to check your body type with the specifications of this mattress!
These mattresses do well with support versus others in the industry. They offer a more resilient sleeping surface to align the spine and help most sleepers feel comfortable in most sleeping positions. Reviewers are keen on describing these mattresses as supportive and and talk about good performance and solid inital comfort.
Edge support is an important attribute for most sleepers and are looking for a supportive surface. These mattresses have good edge support for those that need it.
Bowling Ball & Density Tests
The bowling ball test is good for measuring firmness and support throughout the mattress. These mattresses have good even support and good versatility throughout the mattress.
Longevity is key to budget-conscious mattress shoppers. But, with mattress brands focused on beating their competition for profits, it isn't always clear. That said, with feedback from customers, material quality, and craftsmanship, these mattresses should be good for durability and provide over 5 years of comfort for most. But, some folks who are heavier may find their mattress loses some durability.
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 was a little hesitant in buying this mattress not knowing how it would feel. But I went for it and am now recovering and sleeping the best I ever had! It’s a must buy!View More Reviews
We can’t say enough good things about our purchase! We both sleep great. And best part...no more lower back pain for me.
Absolute best mattress and pillows I’ve ever experienced (68 years)
I was a little skeptical at first, because it came in a box. Don’t be fool. Best decision ever. Set Up: Super easy. Be careful when cutting the bag so that you don’t cut the mattress. I just wished it gave a hint as to “this side up.” Support and Comfort: Right Firmness. The mattress targets certain pressure points on the body. I did an 18-mile run, laid in my bed and noticed how relaxed my feet were. My recovery time was seamless. Cost: It is pricey, but it is so worth it if your workouts are intense throughout the week. There is an option to purchase the mattress through credit and pay it off by installments Sleeping pattern: Wow! I have been able to sleep my full 7-hrs. Rest is key.
I have to say was very sceptical but it has been awesome
It had been at least 12-years since I’d purchased new mattress, so looking for a new with all these different types of mattresses was going to be tough! After extensive research and reading reviews; I bought my performasleep King mattress! Well needless to say it didn’t disappoint. Great mattress and from the moment I laid on it; I felt my body just starting mold into the mattress with all support it needed still!
This mattress has brought sanity and sweet, sweet slumber to our lives. We feel the need and urge to tell all our family and friends about it. It has been a blessing for sure!
I haven't felt so happy about going to sleep before my matress arrived. Help my lower back pain significantly. Very happy.
Absolutely the best sleep I’ve had in my life, through my marine corps career and now a veteran with back shoulder knee and other problems I’ve found a bed at least for now which satisfies my needs. Excellent job.
I love this bed. Such better sleep at night. I should have gotten pillows to match!
I've been sleeping on my queen size mattress for a week now and have been extremely happy. I wake up well rested and feel refreshed. The perfect combination of firmness and comfort. Great bed!
The mattress has changed the quality of sleep for both me and my life. We both feel like we have better quality sleep
I bought this with some skepticism because of all of the differing models out there. I have used this for two weeks now and its great. It shows me just how much I needed a new mattress. Getting great sleep and not waking up with a sore lower back anymore. Worth the investment . JH
Cannot until it arrives
Best night's sleep in years!!!
First time sleeping in a foam mattress. I thought it would feel mushy and hot. But its actually comfortably firm but not too firm and not too squishy. I also thought it would be hot. It feels comfortable. It doesnt get too hot or too cold. Back feels better too!
We've been sleeping on the mattress for about a week now and if it holds it's current firmness I will be very pleased with it. It's a really good combination of softness and firmness.
Great products and great service!
Extremelly happy with my new mattress. So comfortable and no back pain. Love it!
I had problem with my old mattress and would wake up with lower back pain all the time. This mattress fixes that problem. I’ve been sleeping great since I’ve bought it and have not been nearly as tired in the morning when I wake up
We were on a search for a decent bed that was affordable for a good year. It came down to choosing a box mattress but it's so difficult choosing a brand! Ultimately we choose this mattress because my wife competes in Crossfit competitions and Spartan races and she liked the idea of a mattress to play a role in her recovery. We are now both sleeping better at night with no tossing and turning and seem to wake up more rested.
Thank you for making an affordable quality mattress! Worth Every Penny!
I have had the bed for a couple of weeks and it has preformed as advertised.....and I am very happy with the purchase. I have had no lower back pain that I used to have after sleeping on my old conventional mattress.
I’ve never slept Harder or Better on this thing! I used to snooze for hour or two every morning, now I’m rested, rejuvenated and excited to get up at my first alarm and get to my morning workout.
We love this mattress. It shipped quickly, easily set up, and sleeps great. Highly recommend!
We received our Performa sleep mattress a couple weeks ago and so far we are in love!!
Been sleeping on a king size for a week now, I’m a severe Sleep Apnea case and haven’t had a dream I could remember without wearing a CPAP for a very long time. That changed last week when I got a Performa...I’ve constantly woke up this week and remembered having vivid dreams. It’s kind of nice knowing I’m actually falling into a state of better rest. Getting back to training this month and can’t wait to see the improvement while recovering through better sleep. Seriously, considering a purchase of the pillows offered.
This is the most comfortable mattress I've ever slept on in my life. I lie down and don't want to move. This is the only bed I've ever been able to sleep on on my back. It is definitely cool. My fitted sheet feels almost cold to the touch. I haven't gotten overheated at all. I was able to carry the box to my bedroom and unpack it myself (full size) Such cool packaging! I did that in the afternoon and it was perfect at bedtime.
Noticed a big difference in my sleep the first night we got the mattress. Didn't wake up once during the night and the copper infused pad helped keep me cool all night. Can't imagine sleeping on another mattress.
For years I’ve had trouble sleeping and waking up feeling rested in the morning. I’ve been sleeping on my new PerformaSleep mattress for 9 days and I’ve already seen a drastic improvement. I wake up much more rested and without back pain. It’s been years since I’ve felt this good. Thank you PerformaSleep for an incredible product.
Bought a Queen mattress a year ago and had to buy a king because we just needed that much more amazing!
The mattress arrived very quickly and was a snap to set up. It is extremely comfortable. I am glad I made this purchase.
I purchased this bed based on reviews and not sleeping well along with waking up sore because of a crappy mattress. Now that my body has become used to the performa sleep mattress I sleep great and wake up feeling rested and never sore. Also, it was incredibly easy to unpackage and start using.
What a great bed! It exceeded my expectations!
After the first night I wondered why I had waited so long to switch to PerformaSleep! I have spent my adult life with back pain and pain in my hips from sleeping, since I've had my PerformaSleep mattress I've been pain free. I expected an adjustment period because I've spend my whole life on a traditional style spring mattress but I had zero issues adjusting and from my first night I've been sleeping better than I have for years!! And customer service, top notch. They responded to an email within hours, on the weekend!! Thank you PerformaSleep, I recommend you to everybody that will listen!!
Have had this mattress for a two weeks now and no complaints. I'm actually getting less hours of sleep but waking up more fresh. I feel it's definitely helped my recovery also.
Love my new mattress and let’s not forget the pillows!!! Best pillows ever!!! You guys are the best, you really care about your product and making you customers happy!!! 100% recommended... I’ll definitely change all the mattresses in my house...
This is not a super soft pillow top mattress. This is a mattress for an active individual, it is firm allow your muscles the time need to relax and recover. If you are used to a softer bed give this mattress a few week and you will feel the difference. Great Mattress!
Happy with my new bed
I received the pillow first, and my boyfriend instantly fell in love with it. A few days later the mattress came, and I haven’t slept this great since I can remember. It’s truly amazing. Oh and my dog and my boyfriend fight over the pillow. We definitely are very pleased with our purchase!