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The Best King Memory Foam Mattress - 2022

Last updated on January 10, 2022

We looked at the top 11 and dug through the reviews from 31 of the most popular review sites including and more. The result is a ranking of the best .

King Memory Foam Mattress

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Our Picks For The Top

Show Contents
Our Take
Experts Included
Pros
Cons
  Top Pick

Sleep Innovations Marley Hypoallergenic King Memory Foam Mattress

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Sleep Innovations

Marley Hypoallergenic King Memory Foam Mattress

Overall Take

Budget-Friendly OptionThis king memory foam mattress is also available in a California king in 8, 10 and 12-inch thicknesses.

Experts Included
DWYM Home Experts plus SuperComfySleep.com, Slumber Search. Along with user reviews from Amazon and Walmart.
Pros
" It looks simple yet classy. It also features a TriComfort Design so you can be rest assured that this mattress will keep you sleeping soundly through the night."
Cons
"without many of the perks of some of the newer brands."
  Runner Up

TUFT & NEEDLE Original Adaptive King Memory Foam Mattress

TUFT & NEEDLE

Original Adaptive King Memory Foam Mattress

Overall Take

Pressure ReliefThis king memory foam mattress is designed with a support layer that lasts through the night, not just for the first few hours.

Experts Included
DWYM Home Experts plus Sleep Foundation, Sleepopolis, The New York Times, Mattress Clarity, BestReviews. Along with user reviews from Amazon.
Pros
" The Tuft & Needle comes in one firmness, which is medium firm. For most individuals, this feel is likely to strike a comfortable balance between softness and support."
Cons
"Strict stomach sleepers may also find that the top layer of foam is a just a little too gentle, causing their hips to sink out of alignment with their shoulders."
  We Also Like

Zinus Cooling Gel-Infused Green Tea King Memory Foam Mattress

Zinus

Green Tea King Memory Foam Mattress

Overall Take

Soothing FormulaThis mattress is infused with cooling gel and green tea to help you have a comfortable sleep.

Experts Included
DWYM Home Experts plus BestReviews. Along with user reviews from Amazon.
  Also Great

PrimaSleep Wave Gel Infused King Memory Foam Mattress

PrimaSleep

Wave Gel Infused King Memory Foam Mattress

Overall Take

Maintains a Constant TemperatureThis king memory foam mattress is infused with a gel that helps keep you cool at night.

Experts Included
DWYM Home Experts plus SuperComfySleep.com, Foam Globes, The Sleep Shop, Hack To Sleep. Along with user reviews from Amazon.
Pros
" Perfect top layer supports bodyweight, maintain body shape to rest in the finrest condition. Soft fel-infused memory foam supports body weight with softness. I gel disperses temperature/heat buildup to preserve a constant mattress temperature. HD Foam prevents memory foam deflection...."
Cons
"Cover cannot be removed or washed."
Don't just take for granted what one reviewer says. Along with our own experts, DWYM analyzes the top expert reviews of the leading products and generates a score you can actually trust.
18

Products Considered

We identified the majority of the available to purchase.
11

Products Analyzed

We then selected the leading and most popular products for our team to review.

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31

Expert Reviews Included

In addition to our expert reviews, we also incorporate feedback and analysis of some of the most respected sources including: Sleep Foundation, Sleepopolis, The New York Times, Mattress Clarity, BestReviews.

176,675

User Opinions Analyzed

We also incorporate user reviews from the leading retailers including

Our experts reviewed the top 11 and also dug through the reviews from 31 of the most popular review sites including and more. The result is a ranking of the best of the best .

DWYM is your trusted roduct review source. Our team reviews thousands of product reviews from the trusted top experts and combines them into one easy-to-understand score. Learn more.

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The Best Overall

Sleep Innovations Marley Hypoallergenic King Memory Foam Mattress


Our Expert Score

7.8
2 expert reviews

User Summarized Score

8.2
1,322 user reviews

Our Take

Whether you are a side, stomach or back sleeper, you'll find this king memory foam mattress provides just the right amount of support. Thanks to the built-in airflow channels, the mattress also does an excellent job of keeping you cool and comfortable throughout the night. Since the mattress is hypoallergenic, it's a great choice for all - even those with allergies and sensitive skin.

What other experts liked

It looks simple yet classy. It also features a TriComfort Design so you can be rest assured that this mattress will keep you sleeping soundly through the night.
- SuperComfySleep.com
These are affordable mattresses that may not be ideal for those that are larger or need specific firmness options for their bodies.
- Slumber Search

What other experts didn't like

Ideal only for back sleepers
- SuperComfySleep.com
without many of the perks of some of the newer brands.
- Slumber Search

The Best Bang For Your Buck

PrimaSleep Wave Gel Infused King Memory Foam Mattress

Our Expert Score

8.9
4 expert reviews

User Summarized Score

9.2
1,471 user reviews

Our Take

You won’t end up warm and sweaty thanks to the temperature-regulating qualities of this mattress. It also has a layer which provides good ventilation and disperses body pressure. The mattress cover helps to keep it feeling fresh and clean.

What other experts liked

Perfect top layer supports bodyweight, maintain body shape to rest in the finrest condition. Soft fel-infused memory foam supports body weight with softness. I gel disperses temperature/heat buildup to preserve a constant mattress temperature. HD Foam prevents memory foam deflection. 3-layer construction for ergonomic suport and strain releif. Offers complete...
- SuperComfySleep.com
The 10″ PrimaSleep Wave mattress provides a blissful sleeping experience. With a top layer that is spongy and firm, this mattress provides great comfort. The sleep positions vary from individual to individual and no fixed type fits all positions. This mattress, however, is ideally suited for most of the positions...
- Foam Globes
This is an ideal mattress for people that suffer from back issues, and you'll love it even if you don't have back problems. The surprising thing is how well it performs, and it's easily better than much more expensive mattresses.
- The Sleep Shop
Very comfortable, supportive, fanatastic low price, sleeps cool, minimal motion transfer, quiet
- Hack To Sleep

What other experts didn't like

It doesn't last long. Let it inflate for nearly the efull recommended time for 48 hours, the expansion time is slow. Quite a hefty haul. Can't roll it up once it is open.
- SuperComfySleep.com
Cover cannot be removed or washed.
- The Sleep Shop
Cover isn't removable, quite soft-not suited to those who prefer a firmer mattress, shortish warranty of 1 year.
- Hack To Sleep

Overall Product Rankings

Our Findings


Sleep Innovations Marley Hypoallergenic King Memory Foam Mattress

What We Liked: Whether you are a side, stomach or back sleeper, you’ll find this king memory foam mattress provides just the right amount of support. Thanks to the built-in airflow channels, the mattress also does an excellent job of keeping you cool and comfortable throughout the night. Since the mattress is hypoallergenic, it’s a great choice for all – even those with allergies and sensitive skin.


TUFT & NEEDLE Original Adaptive King Memory Foam Mattress

What We Liked: You won’t have to worry about feeling overheated when you go with this king mattress, as it contains a cooling gel to keep you comfortable. The mattress is constructed without any harmful chemicals and even has a CertiPUR-US certification. Sleepers will also appreciate the open-cell structure, as this creates a flexible sleep surface.


Zinus Cooling Gel-Infused Green Tea King Memory Foam Mattress

What We Liked: This king memory foam mattress is infused with gel and green tea which help to regulate your sleeping temperature. It’s highly durable and well constructed. The mattress is efficiently compressed into one box for shipping.


Ashley Furniture Chime Bed-In-A-Box King Memory Foam Mattress

What We Liked: This king memory foam mattress is layered, with the foam core reducing motion transfer so you have a peaceful sleep. It is made with hypoallergenic material, and is ideal for those with allergies. The mattress comes rolled in a compact box.


PrimaSleep Wave Gel Infused King Memory Foam Mattress

What We Liked: You won’t end up warm and sweaty thanks to the temperature-regulating qualities of this mattress. It also has a layer which provides good ventilation and disperses body pressure. The mattress cover helps to keep it feeling fresh and clean.

Our Buying Guide

If your old king mattress is no longer comfortable, giving you backaches, making you sweat and not letting you have a restful sleep any longer, it’s time to invest in a new one. Memory foam is a leading option in mattress choices because of the immense comfort it brings. Did you know that this material was actually made for NASA? The viscoelastic qualities of the memory foam made it perfect for helping pilots and astronauts stay safe in crashes.

There are a few different types of memory foam mattresses available, and each provides different benefits to its users. Traditional memory foam is a good choice for warm sleepers. It’s able to absorb heat, so it keeps you feeling cool all night. Plus, the type of support it provides helps to decrease stress on your joints.

Open-cell memory form is another option. If you don’t like the feeling of sinking into a mattress, then you’re in luck. This one doesn’t make you feel like you’re falling into quicksand. Plus, it also has strong heat regulation qualities so that it can help you have a restful sleep without feeling hot and sweaty all night. Gel memory foam is perfect for very hot sleepers. It works like a gel ice pack, with the gel fully infused into the mattress to help keep the body cool.

Regardless of what kind of king memory foam mattress you choose, you’ll have a good night’s sleep. Most memory foam mattresses are made with several different layers of materials. They work together to provide the right kind of support, comfort and cooling features you need. The top layer of memory foam contours to your body but it doesn’t provide the feeling of sinking in. This helps to reduce pressure on your joints and lets your body fully relax.

DWYM Fun Fact

When you get a new king memory foam mattress, it’s important to maintain it properly so it stays in good condition. Use a hand vacuum with a soft brush attachment to clean your mattress on a regular basis. This will ensure it stays fresh. You should also change your sheets regularly to prevent bacterial growth. If you have a stain on your mattress, it’s best to clean it right away. You will need to avoid soaking the mattress in water because that will damage the integrity of the foam. Be sure to rotate your mattress by putting the foot side on the head side every six months. This helps it to wear evenly.

The Tips and Advice

  • An element you should keep in mind when looking for a new king memory foam mattress is what style of sleeper you are. Memory foam is ideal for back sleepers and side sleepers because it conforms to your body to take pressure off your spine and joints. If you’re a stomach sleeper, however, memory foam may not be the best choice. Some stomach sleepers find that the memory foam makes them feel like their face is surrounded by the mattress.
  • Consider what type of memory foam you want for your king mattress. All of them provide comfort and support, but gel memory foam is excellent if you find yourself sweaty at night. If you sleep very warm, then the best kind of mattress is a gel memory foam. It’s specifically designed to help keep the body cool all night, and will help regulate the temperature so you have a restful sleep.
  • Take a look at the mattress firmness. For memory foam, you’ll want to pay attention to the indentation load deflection or IDL. The higher the number is for IDL, the firmer the mattress will be. When shopping online, you can’t get a feel for the mattress in person, which is where IDL can come in handy. An IDL of around 12 is a very soft and cushy mattress, whereas an IDL of 50 is a firm and supportive mattress.
  • If you want a durable king memory foam mattress that lasts for a number of years, then pay attention to the memory foam density. Ideally, the memory foam mattress should have a 5-pound per square foot density for a high-quality product. Anything under 3.5 pounds per square foot will not last very long.

About The Author

Anam Ahmed 

Anam Ahmed is a professional copywriter and essayist based in Toronto. She has been writing on technology, travel, parenting and business for over 10 years. As a homeowner and avid gardener, she values finding the best products to make people's lives easier. Anam earned a master's degree from the University of Toronto and a bachelor's degree from Queen's University.