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The 8 Best king memory foam mattresses of 2024

Are you trying to find king memory foam mattresses among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling king memory foam mattresses on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 13 hours of research and did 19 king memory foam mattresses tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best king memory foam mattresses you can buy today

No. 2
FDW 12 inch Gel Memory Foam Mattress Medium Firm Mattresses for Cool Sleep Relieving Pressure Relief CertiPUR-US Certified Mattress in a Box (King)
  • ☎-【MATTRESS IN A BOX & FITS ALL BED FRAMES】- Such fun to receive a mattress that’s rolled and compressed in a box . Follow the instructions and see how the magic happens. It is easy to set up and fits all kinds of queen bed frames, even on the floor. Mattress is recommended 72 hours for air out and reshape.
  • ☎-【EASY TO CLEAN】-It includes a soft cover that is washable for your convenience. Pressure relieving gel foam naturally draws heat away from the body for a more comfortable night's sleep;Beautifully detailed all around cover with four-way stretch works with the memory foam to optimize its conforming properties.
  • ☎-【MATERIAL & CONSTRUCTION】-Gel memory foam mattress include 2.5”gel memory foam and 9.5”high density base support foam for ultimate comfort.The gel memory foam offers complete, luxurious and stress-free support. Gel-infused memory foam keeps you cool during sleep and body-contouring memory foam reduces pressure points and properly aligns the spine.
  • ☎-【UPGRADED COMFORT】-High-quality gel memory foam meets CertiPUR-US program standards for performance and durability Medium cushion-firm feel;The feel of this gel memory foam mattress is slightly plusher than a traditional firm mattress.
  • ☎-【COMFORTABLE & BREATHABLE】-The feel of this gel memory foam mattress is medium firm - slightly plusher than a traditional firm mattress. A gel memory foam mattress can support each part of the body evenly and individually.
SaleNo. 3
Molblly King Size Mattress, 12 inch Cooling-Gel Memory Foam Mattress in a Box, Fiberglass Free,Breathable Bed Mattress for Cooler Sleep Supportive & Pressure Relief, 76" X 80" X 12"
  • {FIBERGLASS FREE} Once, we had used fiberglass; Long long ago, we haven't been using fiberglass any more. You and your family's health is our primary concern and protection.
  • {MATERIAL & CONSTRUCTION}: To improve support and heat dissipation, Molblly 12 inch Cooling-Gel Memory Foam Mattress is designed with THREE layers all-foam system, including 2.5" memory foam, 2.5" comfortable layer, and 7" high density base support foam for ultimate comfort.
  • {COMFORTABLE & BREATHABLE}: All-foam bed design combined expertise and the best materials with advanced sleep technology. Memory foam conducive to continuous airflow & breathable; skin-friendly fabrics adapt to the environment to keep the mattress surface at the ideal sleeping temperature; Buoyant, no-sink support foams adapt and conform to your body for optimal pressure relief; Specialized foams reduce motion transfer of a partner so your sleep is undisturbed.
  • {EASY SHIPPING & SET-UP}: Mattress is compressed and packaged in a box , 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.
  • {SERVICE}: We are a manufacturer specializing in the production and processing of mattresses, We also have professional production and R&D teams. guarantee the best price mattress you can get. If for any reason you are unsatisfied, contact us at any time for support. NOTE: Please allow up to 72 hours after opening the mattress for any potential odor to dissipate and adjust to its final feel once the foam settles.
No. 4
Molblly King Size Mattress, 14 Inch Premium Cooling-Gel Memory Foam Mattress Bed in a Box, Cool King Bed Supportive & Pressure Relief with Breathable Soft Fabric Cover,Medium Firm
  • 🌙 OPTIMAL COMBINATION —— Molblly 14 inch King Size Cooling-Gel Memory Foam Mattress is designed with FOUR layers all-foam system, including 2.5" gel memory foam, 2.5" of comfortable layer, 2" soft pressure relief foam and 7" high density base support foam for ultimate comfort.
  • 🌙 PRESSURE-RELIEVING FOAMS —— Gel infused memory foam regulates temperature while conforming to the body to ease pressure points, providing orthopedic support and prevent motion disturbance.
  • 🌙 SAFE TO SLEEP ON——We only use CertiPUR US certified memory foam and Oeko-Tex certified top fabric to ensure your uncompromising safety and comfort, which means there is no harmful substances like formaldehyde, mercury, and other heavy metals.
  • 🌙 MATTRESS IN A BOX & FITS ALL BED FRAMES —— The king size bed in a box is easy to carry and set up. It fits all kinds of king bed frames, such as box spring, slatted base, flat platform or adjustable bed, hospital bed, even on the floor.
  • 🌙 3,650 NIGHTS GUARANTEED: Molblly mattress comes with a 10-year warranty. If for any reason you are unsatisfied, contact us at any time for support.
SaleNo. 5
OYT King Size Mattress, 12" Inch Gel Memory Foam King Bed Mattress in a Box with CertiPUR-US Certified Foam for Sleep Supportive & Pressure Relief
  • 【No Pain No Interference】: This medium firm mattress is composed of gel memory foam combined with comfort foam, plus high density foam underneath, which aligns your spine and evenly disperses your body weight to relieve pressure points while you are sleeping.It absorbs movement as being opposed to transfer it across the bed. Tossing, turning, getting in and out of bed does not disturb another person, ensuring your peaceful undisturbed sleep.
  • 【Comfortable Breathable】: All foam mattress design combined advanced sleep technology and the best materials.Quality ice silk fabrics adapt to the environment to keep the mattress surface at the ideal sleeping temperature; Sleep comfortably while reducing sweat during hot or humid weather,and give a dry contact of your skin,create a comfortable sleeping surface for a more restful night's sleep,like floating on a Cloud. Completely solved the traditional memory foam mattress HOT shortcomings.
  • 【Health Hypoallergenic Mattress】:The foam has been certified by CertiPUR US and Oeko Tex Standard 100 without harmful substances like formaldehyde, mercury and other heavy metals. Do not have alarmed if you experience a “fresh foam” odor. It is harmless and will dissipate in a few days.
  • 【Easy Shipping Set up】: Mattress in a box, this king 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.
  • 【No Risk Worth Recommending】:  As the brand owner and maker, the best price Mattress you can get. Our bed mattresses go with 10 years. If there is any reason you are unsatisfied with your order, please contact US at any time. Over 98% of our customers are willing to keep their King size mattress and refer it to others.
SaleNo. 6
Vibe Gel Memory Foam Mattress, 12-Inch CertiPUR-US Certified Bed-in-a-Box, King, White
  • Easy Sleep: Our 12-Inch Gel Memory Foam Mattress in a Box offers great support, cooling comfort, convenience, and a clean design with porous, open-cell memory foam that meets CertiPUR-US program standards for performance, emissions, and durability
  • Easy Set Up: Simply take your king size mattress out of the box and enjoy watching it decompress; Jumping, walking, and sleeping on your king mattress can speed up the process; Designed for a platform bed, this mattress is adjustable bed friendly, too
  • 2 Memory Foam Layers: 5 inches of foam padding, comprised of 2 inches of gel memory foam atop 3 inches of comfort memory foam, provides advanced cooling technology for better body temperature regulation as well as pressure-relieving comfort
  • 2 Supportive Foam Core Layers: 7 inches of layered dual-foam support means that the textured high-density foam base offers maximum support, pressure point relief, and proper spinal alignment
  • General Note: Please allow 24-72 hours for your mattress to regain its full shape; Any memory foam will expand faster in a warmer room; In cold temperatures, at delivery, your mattress may take a bit longer to return to its full size from its compressed state
No. 7
PayLessHere 12 Inch Gel Memory Foam Mattress/Bed-in-a-Box/Bed Mattress/Medium Firm Mattress with Removable Cover Fiberglass Free Home Furniture CertiPUR-US Certified/Pressure Relieving (King)
  • CertiPUR US Certification: The foam has been certified by CertiPUR US and is free of harmful substances such as formaldehyde, mercury and other heavy metals. The memory foam mattress provides comfort and support for a better night's sleep.
  • High quality materials: Our memory sponge mattresses, combined with professional knowledge and the best materials, adopt advanced sleep technology. Gel memory foam helps with continuous airflow and air permeability; The surface of the mattress is made of skin-friendly fabric to improve breathing ability. The foam layer in the middle is designed as a airflow channel to increase airflow through all areas of the foam mattress.
  • Humanized design:the design of your mattress comes from the modern bed design, which conforms to the ergonomics and the breeze airflow. Snuggling in the silk soft jacquard top, your spine is perfectly protected. Your medium luxury mattress is very suitable for side sleepers and stomach
  • Gel Process:The gel on your mattress absorbs excess heat while you sleep, allowing you to fall asleep more quickly.Compared to conventional mattresses, the gel coating increases the mattress's use time and makes it less prone to damage.
  • Professional packaging:our technology can effectively compress the mattress into a box to facilitate transportation and operation into the bedroom; Just open the box and unfold it, and the mattress will complete the rest of the work. It will return to its original shape within 72 hours
No. 8
ZINUS 12 Inch Green Tea Cooling Gel Memory Foam Mattress, Fiberglass Free, Cooling Gel Foam, Pressure Relieving, CertiPUR-US Certified, Bed-in-a-Box, King
  • AS COOL AS IT GETS - Settle in to a bed made with our most cooling formula yet, promising perfectly temperature-regulated sleep and a clean feeling night after night, all thanks to our enveloping memory foam packed with cooling gel and green tea
  • PRESSURE-RELIEVING FOAMS – Layers of ultra-cooling gel and green tea infused memory foam, soft comfort foam and durable, high density base foam
  • AFFORDABLE REST, CERTIFIED QUALITY - Experience the luxury of high-quality CertiPUR-certified foams without breaking the bank. This fiberglass-free mattress offers unparalleled value and is developed for quality, durability and ultimate comfort.
  • EXPERTLY PACKAGED - Our technology allows this mattress to be efficiently compressed into one box that’s easily shipped and maneuvered into the bedroom; simply unbox, unroll and this mattress does the rest, expanding to its original shape within 72 hours
  • Worry-free 10 year limited warranty included; twin mattress supports a maximum weight of 250 lbs, while all other sizes can support up to 500 lbs
No. 9
ZINUS 12 Inch Green Tea Memory Foam Mattress, Fiberglass Free, Patented Custom Contour Support, Sturdy Base Foam, CertiPUR-US Certified, Bed-in-a-box, King, White
  • THE RIGHT COMBINATION - Refreshing green tea and moisture-absorbing charcoal infused into three layers of top-notch foam. This mattress cradles every curve—alleviating those points of tension and allowing your body to recover as you rest.
  • PATENTED CUSTOM CONTOUR SUPPORT - No more waking up feeling like you've been swallowed by your mattress. Zinus' patented Custom Contour technology is expertly layered in our high-quality memory foam to our super-dense base foam for ultimate support.
  • AFFORDABLE REST, CERTIFIED QUALITY - Experience the luxury of high-quality CertiPUR-certified foams without breaking the bank. This fiberglass-free mattress offers unparalleled value and is developed for quality, durability and ultimate comfort.
  • EXPERTLY PACKAGED - Our technology allows this mattress to be efficiently compressed into one box that’s easily shipped and maneuvered into the bedroom; simply unbox, unroll and this mattress does the rest, expanding to its original shape within 72 hours.
  • Please allow 24-72 hours for your mattress to regain its original shape. Memory foam will expand faster in a warmer room and may take longer to regain shape from its compressed state in colder temperatures. Expansion time will vary based on surroundings.
  • Worry-free 10 year limited warranty included; twin mattress supports a maximum weight of 250 lbs, while all other sizes can support up to 500 lbs
No. 10
Molblly King Mattress, 14 inch Gel Memory Foam King Size Mattress in a Box, Medium Firm Bed Mattress King, Cool Sleep & Comfy Support, 10 Year Support
  • 【Perfect for Hot Sleepers】 Molblly premium king mattress is designed with cooling gel memory foam in upper layer to maintain a comfortable climate all night while conforming to the body to ease pressure points.
  • 【Get up With No Pains】 This 14 inch king size bed features a medium-firm feel for all sleep positions. It is firm enough to support you evenly, but soft enough to be gentle where you're sensitive.
  • 【No Disruption】The gel infused memory foam in this king bed mattress crates to your body and reduce motion transfer, providing a non-disturbed sleep even your partner turn or toss in the middle of the night.
  • 【Cool Bed in a Box】 Molblly technology allows this 14 inch king mattress to be efficiently compressed into one box for ultimate convenience. They fit all frames, such as box spring, floor, slatted base, flat platform or adjustable bed, hospital bed. Simply unbox, unroll and this mattress does the rest, expanding to its original shape within 72 hours.
  • 【Quality First】 We only use CertiPUR US certified gel memory foam and Oeko-Tex Certified top fabric to ensure your uncompromising safety and comfort. We offer you 100-days free trial and 10 year warranty.

How to choose a good king memory foam mattresses

Does the idea of finding a fantastic king memory foam mattresses make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in king memory foam mattresses. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top king memory foam mattresses products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top king memory foam mattresses on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top king memory foam mattresses brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top king memory foam mattresses based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the king memory foam mattresses were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good king memory foam mattresses, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your king memory foam mattresses.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting king memory foam mattresses for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our king memory foam mattresses. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what king memory foam mattresses should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on king memory foam mattresses.