King Koil Mattress Reviews

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King Koil

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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.

Mattress Score

Overall Score: 8.4/10

Customer Satisfaction: 8.5/10

Price Value: 8.2/10

No Back Pain: 8.5/10

Price: $549-$3399

Trial Period: No Trial

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King Koil's Specifics

King Koil mattresses are sold in a variety of retailers across the country. When it comes to their mattresses, they offer a hybrid mattresses with pocketed coils. Most customers are initially comfortable with these mattresses and report good things, but there are some complaints about the quality for the price.

If you are looking for a well-rated pocketed coil mattress at a competitive price, see our list of top rated hybrid mattresses, and specifically the Dreamcloud mattress offers high material quality for the price.

Quality of Materials

King Koil has a partnership with the International Chiropractors Association and has used that as a powerful instrument for building consumer trust. The materials used are intended to align the spine properly for a comfortable sleep. There is not a lot of information on the breakdown of materials used in King Koil beds. This is something important to discuss with your local retailer if you are considering buying a King Koil. Ensure that they use certified foams that don't offgas toxins. Additionally, know that these mattresses are priced high versus many comparable online alternatives so make sure that there are sufficient add ons thrown in to make up the difference.

Mattress Types

King Koil offers a variety of innerspring and hybrid mattresses. They all provide different firmness and price points. We'll go through all of these models in detail below...


The Siena comes in multiple firmness options and is a budget friendly option from King Koil starting below $600. It is a hybrid with individually wrapped coils and one layer of foam (either soft or firm depending on the firmness selection). Though it is a supportive mattress, the lack of thick foam layers above make it a possible issue for pressure points.

The pros are an affordable hybrid solution.

The cons lack of adequate pressure relieving materials vs. competitors at a similar price point.

Price Range: $549-$799

Final Score: 8.3 / 10


The King Koil Sydney is different than the Siena because it has one more layer of foam on the top layer. It offers additional cooling with an AdvantaGel layer of foam. Like the Siena, it comes in multiple firmness options and is price competitive.

The pros: A hybrid with multiple layers of foam in the top layer with extra cooling.

The cons: The foam layers may not be thick enough for proper comfort.

Price Range: $749-$1,199

Final Score: 8.6 / 10


The King Koil Kingsley mattress comes with three layers of foam including cooling AdvantaGel and iFusion foam. This provides extra contouring versus the Sydney and Siena versions. However, with this enhancement comes a steep price increase.

The pros: More comfortable mattress with three layers of foam above the coils.

The cons: More expensive option than competitors with similar offerings.

Price Range: $1,149-$1,799

Final Score: 8.5 / 10


The King Koil Montego offers an additional layer of foam versus the Kingsley with a layer of iNergex3 foam, which is a body conforming memory foam option. This mattress will provide a more comfortable cushion, but may be less cool than others.

The pros: Comfortable amount of cushioning above the coil system.

The cons: Price point is quite expensive versus online competitors.

Price Range: $1,249-$1,899

Final Score: 8.6 / 10


The King Koil Athens is made of three layers of foam above the coil system. However, one of the layers is Talalay latex, which will be more responsive and more expensive than memory foam alone. It also comes with iNergex3 foam. This mattress may sleep warm for hot sleepers, but most should be comfortable.

The pros: Foam and latex hybrid means more comfort and greater bounce than conforming options.

The cons: The price is very high versus competitors with similar materials.

Price Range: $1,999-$2,399

Final Score: 8.6 / 10


The King Koil Vienna is another hybrid and comes with multiple layers of foam - AdvantaGel cooling foam, a surface layer of Joma wool, GelResponse latex, and iNergex3 foam. It is the most luxurious of the King Koil offerings and this is reflected in the price.

The pros: A very comfortable hybrid with both latex, memory foam, and wool above the pocket coil system.

The cons: The pricepoint is very high versus other online options available that have comparable builds.

Price Range: $2,899-$3,699

Final Score: 8.2 / 10


The King Koil Monaco is a hybrid that comes with AdvantaGel foam on the top layer, followed by iFusion lumbar support foam, and lastly the coil system on the bottom. For some sleepers, it may not offer the amount of pressure point relief that it should because of the lack of multiple comfort layers above the coil system.

The pros: More affordable option with plenty of cooling and back support.

The cons: Potential pressure point issues for those that need it most.

Price Range: $949-$1699

Final Score: 8.4 / 10


The King Koil iMattress is their mattress in a box option, coming in both all memory foam G Series and hybrid options. The G-Series comes in either the G10 or G12, which are made of memory foam. The G10 is three layers of firm memory foam for those that prefer a firm sleeping surface. The G12 is a softer option, which is still 3 layers of memory foam, but with added conforming. Both are priced around $1000 for a queen, which is higher than other mattress in a box companies. The hybrids come in either a firm or plush option. with either one or two layers of foam on top. At well over $1,000 for a queen, there are other options that are more competitively priced.

The pros: Mattress in a box options in either memory foam or hybrid options.

The cons: Expensive versus other mattress in a box makers with similar materials.

Price Range: $849-$1,599

Final Score: 8.3 / 10

XS 10 and XS 50

The XS series comes with either the XS 10, which is a firm mattress or XS 50 which is a softer option. They both have a copper infused cover and temperature regulating memory foam above encased coils. Overall, they are comfortable mattresses, but the prices are steep against other comparable online options.

The pros: Comfortable mattress with the benefits of a copper infused cover.

The cons: Quite expensive option versus other similar online brands with similar materials.

Price Range: $1,299-$2,279

Final Score: 8.5 / 10

Browse King Koil Customer Reviews

Great Quality for Price

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.

Buyer Beware - Not a standard sized bed!

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

Guest room

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.

Cheap Mattress for College Kid's Appartment

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

Instant Comfort

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.

Great mattress

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.

Incredible mattress!

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 satisfied

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...

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.

King Coil Mattress

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...

Superb Buy

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!

Supper Happy With Our King Koil Mattress Purchase

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!

great buy

I love my new mattress -and the service that came with it.

Great Delivery Time

The bed is great. It came when they said it would and the sales person was wonderful in working with our family.

Just right

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.



Hello my new Mattress

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....



Sleep in comfort

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.

Queen King Koil

Very happy with our purchase! Bed is comfortable. Not too firm, not too soft. Great quality for a great price!

Cloud 9

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.

Absolutely love my mattress

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.

new Matress

The store was great the product was well priced and it was a convenient purchase. Loved the salesmen [Associate name removed].

Highly recommended

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.

Very Happy

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...

great mattress sleep like a baby love it so much it is great

Excellent & good quality

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.

Just right for the spare room!

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!

Wonderful comfort!!

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.

Welcome to a restful night's sleep

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...

Mattress is unbelievably comfortable. My wife and I love it so much.

Great price

So far so good! Great price for the quality. I'll write another review after about a month or so

Great mattress

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.

Not what I expected mattress already had an indentation after sleeping on it for the first time.

Mattress after the first night of sleep had a indentation in it already. Was or is not as comfortable as I expected.

Extremely Satisfied

I was very pleased with the delivery men, they were great. Being disabled and unable to dismantle my other bed, they went the extra mile and did it for me. They were very professional and pleasant to deal with. I will be making all my future purchases at this store, as their prices are also very good.

King Koil Mattress & Boxed Spring

Great buy! Old mattress and boxed spring were removed and new mattress and boxed spring was delivered and set up in 5 minutes.

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