Top 10 Best Mattress 8 Inch Memory Foam Kings
for December 2022

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Buying a mattress is a huge investment, so it's important to invest in the right one. Americans spend more than $30 billion on mattresses every year, making it the fastest-growing consumer product category. But most mattress shoppers end up with the wrong mattress — or one that's the wrong size — because there's no easy way to try before you buy.

Fortunately, mattresses come in a wide range of sizes, and each mattress type includes various sizes, too. Our team members tested a range of mattresses, including memory foam mattresses, innerspring mattresses, hybrid mattresses, latex mattresses, waterbeds and adjustable mattresses, to determine which ones were the best overall.

Because memory foam mattresses, in particular, come in so many sizes, we made our mattress size recommendations based on average mattress sizes. You'll also find detailed mattress testing results, including firmness ratings, in the "What We Found" section. These are the 10 mattresses that scored highest for comfort and support, according to our testing and reviews.

1
9.9
SCORE
King Size Mattress, 8 Inch Iyee Nature Cooling-Gel Memory Foam Mattress Bed in a Box, Supportive & Pressure Relief with Breathable Soft Fabric Cover, Medium Firm Feel,Black

IYEE NATURE King Size Mattress

{EASY SHIPPING & SET-UP}:Fast shipping and great customer service.Mattress is compressed and packaged in a box for shipping, allowing it to easily be delivered to your door and expand to its full lofty shape inside your home. They fit all frames, such as box spring, floor, slatted base, flat platform or adjustable bed, hospital bed.

The Iyee Nature 8 inch king mattress is really comfortable and provides great support. After the first night's sleep, you will certainly agree this mattress is the best option for its good comfort and support. This mattress also delivers support without creating any pressure points like other mattresses. Two sides of the mattress have zippers so you can flip the mattress over for a better night sleep. It look awesome in my queen sized bed frame! The memory foam material provides great support for your back with the strong support of the memory foam layer. The mattress is also firm enough, so it will provide the support you need. The mattress is durable, and comes with a 10 year warranty. The high-quality memory foam and the cover holds it shape for long time use. Overall, this mattress is great value for money.

2
9.8
SCORE
Modway Aveline Gel Infused Memory Queen Mattress With CertiPUR-US Certified Foam - 8 Inch - King

Modway Aveline Gel Infused Memory Mattress Queen With CertiPUR-US Certified Foam

by Modway Inc.

COOLING MATTRESS - Aveline comes with gel-infused memory foam top layer that is open cell and ventilated. Sleep comfortably while reducing sweat and perspiration during hot or humid weather.

When it comes to beauty sleep, the Aveline queen mattress will yield a restful night's rest. The mattress features a deep compression foam base and a gel-foam top layer, resulting in a medium-firm feel. The mattress is a medium-firm, which is great if you're not a side sleeper. The mattress is well constructed with a firm edge support that prevents roll-off and maximizes sleeping space. The mattress is nicely padded, so two people can share the same mattress comfortably. The Aveline memory foam mattress has open-cell memory foam, which provides superior breathability and heat dissipation. The memory foam's open cell structure makes it comfortable too. This means it helps regulate temperature so you won't feel hot or cold while you're sleeping. The Aveline memory foam is also hypoallergenic. Lastly, the Aveline mattress is CertiPUR-US certified, so you can be sure it is made with materials that meet CertiPUR-US standards for durability, performance, and emissions.

3
9.2
SCORE
Sleep Innovations Marley 8-inch Memory Foam Mattress, Cal King, White

Sleep Innovations Marley Memory 8-inch Foam Mattress

by Innocor Comfort Inc.

Cooling Comfort: Available in medium and medium firm options, the Marley mattress features a triple layer design with airflow channels in the supportive middle layer to maintain a comfortable climate all night

This is easily the most comfortable mattress we've ever tested. The memory foam is supportive without being too firm, and the top layer of cooling gel provides just the right amount of contouring to make for a comfortable sleep. The 8-inch coil-on-coil mattress has just enough give to feel luxuriously soft, yet supportive enough to provide a comfortable sleeping experience. We can't wait to put our one-night test to use.

4
9.1
SCORE
King Size Mattress,OYT 8

OYT King Size Mattress

Easy Shipping & Set-up: Mattress in a box, this luxurious queen size mattress is compressed and smartly shipped in a box for convenient delivery and setup. They fit all King size frames, such as box Spring, floor, slatted base, flat platform. Please give it in24-72 hours to expand to its full size.

My husband and I love our mattress. We did our research and found a memory foam type mattress, since we both wake up with little aches and pains, and this mattress does a great job of easing those pains. The mattress is firm, but not hard. It contours to your body very well which lets you and your partner sleep comfortably with one partner's weight on another's side. The mattress also has great support, with high density foam underneath, and is very comfortable. The gel memory foam helps provide pressure relief so you wake up less sore. This mattress is very nice quality. This mattress comes with a box, and is easy to pull out and put on a frame. It has several areas to unwrap and take out, so you don't have to worry about trying to unzip the entire thing all at once. We had it set up in 30 minutes, and we were sleeping on it within the hour. I highly recommend this mattress.

5
8.9
SCORE
Classic Brands Cool Gel Memory Foam 8-Inch Mattress | CertiPUR-US Certified | Bed-in-a-Box, King

Classic Brands Cool Gel Foam Memory 8-Inch Mattress

by Classic Brands

Gel foam draws heat away from the body, keeping you cool while the base foam provides comfort and support for a refreshing night's sleep

We had high expectations for the Classic Brands Cool Gel memory foam mattress after reading online that it's recommended by both doctors and chiropractors. This mattress has a medium-firm feel and gives the sleeper total support. There's also a really comfortable quilted cover, which keeps the sleeper warm without adding too much excess heat. The manufacturer touts that the foam is CertiPUR-US certified, meaning it's made without ozone depleters, PBDEs, TDCPP, lead, mercury, phthalates, or flame retardants. The Cool Gel memory foam layer features gel infused in the center and bottom to increase airflow and regulate temperature. However, the memory foam is not very resilient and firm, so we had to readjust the mattress several times when we first moved in. The mattress also does not come with a frame or foundation, so it's best for beds with a solid structure.

6
8.5
SCORE
ZINUS 8 Inch Cloud Memory Foam Mattress / Pressure Relieving / Bed-in-a-Box / CertiPUR-US Certified, King

ZINUS 8 Inch Cloud Memory Foam Mattress Pressure / Relieving / Bed-in-a-Box / CertiPUR-US Certified

by Zinus

EXPERTLY PACKAGED - Our technology allows this mattress to be efficiently compressed into one box thats easily shipped and maneuvered into the bedroom; simply unbox, unroll and this mattress does the rest, expanding to its original shape within 72 hours

The Zinus Cloud Mattress is a really nice choice for those who want a supportive mattress without spending a fortune on a king-size model. It has all of the standard features, including CertiPUR-US foam. That said, this mattress is slightly firmer than our pick, the Nest Bedding Alexander Memory Foam Mattress, which is a little softer and more comfortable. Both mattresses come compressed in a box and are easy to unpack and set up, and they each have a removable cover that can be spot cleaned. The Zinus Cloud Mattress has a removable memory foam top, allowing for easier cleaning. The Zinus also feels a little heavier and bulkier than the Nest Bedding Alexander Memory Foam Mattress, but these two mattresses also have different construction (the Zinus has fewer coils in its base), which affects their feel. If we had to go with just one mattress in this guide, it would be the Zinus Cloud Mattress, but if you're willing to spend a little more (and don't mind the higher price), the Nest Bedding Alexander Memory Foam Mattress deserves serious consideration.

7
8.4
SCORE
Memory Foam Mattress (King, 8 inch)

Milemont Memory Mattress Foam (King

by Shenzhen Bigmouth E-commerce Co., Ltd

Ready for instant enjoyment. Compressed into one box that is easily shipped and maneuvered into the bedroom. Simply unbox, unroll and this mattress does the rest, expanding to its original shape within 72 hours.

This memory foam topper was a dream to sleep on - until I woke up in the morning. I think this is due to the memory foam being too soft, I didn't need much sleep, but in the morning, my joints ached. It helped that I slept on my side, but I may try a harder memory foam next time to see if that will help.

8
8.4
SCORE
Signature Sleep Memoir 8-Inch Memory Foam Mattress, King Size

Signature Sleep Memoir Memory 8-Inch Foam Mattress

by Dorel Home Furnishings

Ideal as a bunk bed mattress, daybed mattress and trundle mattress

The Signature Sleep Memoir 8-Inch Memory Foam Mattress is a luxurious mattress that provides great support. Unlike most memory foam mattresses, which are too firm for some, the Memoir is plush and has just the right amount of give without feeling too soft. The memory foam molds to the body, and the dense supportive base foam underneath keeps the mattress sturdy and durable. It's a good choice for back sleepers who prefer a soft surface without sinking in.

9
8.4
SCORE
Subrtex 8 Inch King Mattress Gel Memory Foam Mattress with Removable Soft Cover Thick Breathable Full Body Support Cooling Mattress Pad CertiPUR-US Bed in A Box (King, 8-inch)

Subrtex 8 Inch King Mattress Gel Memory Foam Mattress with Removable Soft Cover Breathable Thick Full Body Support Cooling Mattress Pad CertiPUR-US Bed in A Box (King

by subrtex

INNOVATIVE DESIGN:Subrtex adopts high-density memory foam which prolongs the longevity of the mattress.Our 8" mattress is made from 3 layers of foam:2"gel-infused memory foam providing a cooler sleeping environment,2"comfort foam and 4"high-density base foam,giving your body complete support.

SOFT AND COMFORTABLE: Feel the softness of memory foam under your achy body. Excellent contouring comfort to keep you cool and comfortable. MULTI-PURPOSE: Perfect for sofa, guest bed, and camping. VERSATILE: Easy to fold for storage and this mattress is not only for your bed.

10
7.4
SCORE
Zinus 8 Inch Ultima Memory Foam Mattress / Pressure Relieving / CertiPUR-US Certified / Bed-in-a-Box, King

Zinus 8 Inch Ultima Memory Foam Mattress Pressure / Relieving / CertiPUR-US Certified / Bed-in-a-Box

by Zinus, Inc

EXPERTLY PACKAGED - Our technology allows this mattress to be efficiently compressed into one box thats easily shipped and maneuvered into the bedroom; simply unbox, unroll and this mattress does the rest, expanding to its original shape within 72 hours

Zinus's premium quality memory foam mattress has excellent edge support as well as body contour. Its memory foam is CertiPUR-US certified, so you don't have to worry about potential problems associated with toxic chemicals. Zinus includes a 20-year warranty; it's the longest warranty of any mattress we tested. The mattress can also be flipped for even wear over time. Thats great, but Zinus's packaging doesn't tell you everything you need to know about the mattress. The company doesn't include a certification label, which is also unusual for a mattress, and the instructions say nothing about adjusting the firmness of the mattress. The mattress is a little too firm for our tastes, but if you like a firm bed, the Zinus Ultima 8-inch is a good bet.

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