The Best Extra Firm King Mattress of 2022

After hours of researching and comparing all models on the market, we find out the Best Extra Firm King Mattress of 2022. Check our ranking below.

Our Picks For The Top Extra Firm King Mattress


Bestseller No. 1
Serta - 13" Clarks Hill Elite Extra Firm King Mattress, Comfortable, Cooling, Supportive, CertiPur-US Certified
  • Contains Serta's PillowSoft Foam: an extra-soft foam that gently contours to the body in order to enhance cushioning and support.
  • Implements Cool Twist Gel Memory Foam: this unique design features cooling gel swirled into premium memory foam that helps enhance airflow and heat dissipation for cool, contouring type of comfort.
  • Utilizes Serta's Cool Twist Gel Foam: a cooling gel is swirled directly into breathable foam that is designed to promote airflow and heat dissipation.
  • Supported by 805 Individually wrapped coils that feature Serta's Best Edge foam encasement technology: this is an extra deep foam rail that helps to support the edges and extend the sleep surface.
  • The Serta Clarks Hill mattress is a traditional mattress and is not compressed into a smaller box. It comes with a worry free 100 Night Trial and 10 Year Limited Warranty.
SaleBestseller No. 2
Milliard Memory Foam Mattress 10 inch Firm, Bed-in-a-Box | Pressure Relieving, Classic (King)
  • Support – 1” of responsive plush memory foam over a 9“ high density foam base for a super firm and supportive feel.
  • Unmatched Comfort – Milliard foam is always consistent throughout the mattress with a balanced supportive lift and that does not bottom out.
  • Convenient - The beautifully designed cover is removable and machine washable for easy care.
  • Durable - Built to last and made of luxe certified foam that won’t lose its shape, Milliard foam is always consistent throughout the mattress.
  • Size - Open mattress measures 10”. The mattress ships compressed and rolled. While you can sleep on it immediately, allow up to 72 hours for the mattress to fully expand.
Bestseller No. 3
JINGWEI King Size Mattress, 12 Inches Cooling-Gel Memory Foam Mattress Bed in a Box, Certified Foam, Pressure Relief Supportive, 76 X 80 X 12 inches
  • 【Cool Mattress to Sleep On】Jingwei Gel Memory Foam Mattress contains cooling gel particles and keeps you cool all night. The super breathable cover helps to dissipate heat. The open foam construction enhances airflow.
  • 【Say Goodbye to Back Pain】 The 12 INCH Mattress features a 3-Layer Design: (1) 2.5" gel memory foam that fits your body perfectly and absorbs 95% of your body pressure; (2) 2.5" comfortable layer with special formula and design for cushioned feel comfort; (3) 7" high density support foam which gives your body perfect support from head to toe and create medium-firm feel.
  • 【Sleep without Concern】All foams are consistent with the highest standards: CertiPUR-US and OEKO-TEX 100, meaning they are free of unhealthy chemicals like formaldehyde, mercury, and other heavy metals. This is suitable for all people, including the elderly and the young.
  • 【Bed in a Box】Mattress is compressed and packaged in a box for shipping, allowing it to easily be delivered to your door. They fit all frames, such as box spring, floor, slatted base, flat platform or adjustable bed, hospital bed. Queen Mattress Dimensions: 60 X 80 X11 inches.
  • 【No Risk】Our mattress has an honest 10 year limited warranty and 30-days money-back return policy. Please allow up to 72 hours for the mattress to fully expand, if you have any questions at all, do not hesitate to reach out!
SaleBestseller No. 4
Signature Design by Ashley Limited Edition 11 Inch Firm Hybrid Mattress, CertiPUR-US Certified Gel Foam, King
  • LUXURY MATTRESS. Your ticket to luxurious comfort. For back sleepers, this mattress's foam layers are a perfect match for feeling well rested with its combination of wrapped coils and gel memory foam.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 temperature, at delivery, your mattress may take a bit longer to return to full sized from its compressed state.The expansion time of the mattress will vary as per the surrounding
  • 11" PROFILE. Designed with layers of support foam, gel memory foam for pressure point relief and power packed wrapped coils to reduce motion transfer
  • ULTRA COMFORT: While the foam layers cradle your body in comfort, the 4-way stretch knit cover is a dream to lay on for kids and adults alike
  • KING SIZE: Measures 75" W x 79" D x 11" H and is compatible with most king bed frames. Bed foundation, box spring and frame available, sold separately
  • READY FOR INSTANT ENJOYMENT: Arrives in a box. Simply unbox, cut the protective wrap, unroll and watch the mattress expand.
Bestseller No. 5
Zinus 10 Inch Green Tea Memory Foam Mattress / CertiPUR-US Certified / Bed-in-a-Box / Pressure Relieving, White, King
  • 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 temperature, at delivery, your mattress may take a bit longer to return to full sized from its compressed state.The expansion time of the mattress will vary as per the surrounding.
  • THE RIGHT COMBINATION - Our special recipe for rejuvenating rest. Refreshing green tea and moisture-absorbing ActivCharcoal infused into pressure-relieving memory foam that cradles your shape so you awake free of aches and pains and fresh as a daisy.PRESSURE-RELIEVING FOAMS - 2.5 inches conforming memory foam, 2 inches soft, airflow enhancing comfort foam, and 5.5 inches durable, high density base support foam; ideal for side sleepers and petite to average-weight sleepers
  • CERTIPUR US CERTIFIED - Highest quality foam is CertiPUR US Certified for durability, performance, and content
  • 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
Bestseller No. 6
Lucid 10 Inch Memory Foam- King Size Mattress – Firm – Gel Infusion – Hypoallergenic Bamboo Charcoal- Mattress in a Box
  • UNIVERSAL COMFORT - This mattress features a 10-inch FIRM feel ideal for side, back, and stomach sleepers that crave more support and less sink, pairs with most King bed frames.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 temperature, at delivery, your mattress may take a bit longer to return to full sized from its compressed state.The expansion time of the mattress will vary as per the surrounding
  • GEL FOAM - Gel infused memory foam regulates temperature while conforming to the body
  • EASY SETUP - Compressed and rolled, this mattress in a box easily fits through narrow hallways and staircases
  • CERTIFIED FOAM - We only use CertiPUR-US certified memory foam to ensure your uncompromising safety and comfort
  • PLACE IN ANY ROOM – Perfect for teens and guest bedrooms; king size dimensions are 79"(L) x 75"(W) x 10"(H)
Bestseller No. 7
Novilla King Size Mattress, 12 inch Gel Memory Foam King Mattress for a Cool Sleep & Pressure Relief, Medium Firm Feel with Motion Isolating, Bliss
  • RELIEVES PAINS & DAMPENS PARTNER’S MOVEMENTS- Novilla 12'' gel memory foam medium firm king mattress includes 4 different foam layers. Gel memory foam is combined with comfort foam to distribute pressure and mold to your body. And the two layers high density foam that improve durability, which to give your body support for proper spinal alignment. Also to resist sagging and prevent roll-off. Whether you sleep alone or next to a partner, there is no disruption.
  • A SAFE & COMFORTABLE SLEEP ENVIRONMENT- Mattress is made of CertiPUR-US Certified foam, without any harmful off-gassing and substances like formaldehyde, mercury, and other heavy metals. The bed mattress cover use skin-friendly rayon fabric, heavenly soft to touch. Novilla king size memory foam mattress gives you a healthier and cloud-like experience.
  • 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 bed frames, even on the floor. Mattress is recommended 72 hours for air out and reshape.
  • 100-DAYS FREE TRIAL- Your mattresses purchase is not the end. We offer you 100-days free trial and the memory foam mattress king covered by a 10-year protection. Also we continute to provide professional customer care helps to address any dissatisfaction problems you may have. You can enjoy this king memory foam mattress without concerns while you are following your dreams.
Bestseller No. 8
Tuft & Needle - Original King Mattress, Firm Feel, Adaptive Foam, Pressure Relief, Supportive, Cooling, CertiPUR-US, 100-Night Trial
  • Pressure Relief - Our T&N Adaptive foam is engineered based on customer feedback, and provides pressure relief where you need it most. An open-cell structure provides a flexible sleep surface that adjusts to you as you move throughout the night
  • Support - The T&N Original Mattress is ideal for back and stomach sleepers. We complemented the T&N Adaptive foam with a base layer of supportive foam to prevent sinking into the mattress
  • Cool Sleeping - Our open-cell cooling technology foam works with the heat-conducting graphite and cooling gel-infused in our T&N Adaptive foam to wick away heat and moisture for a deep, restful sleep
  • Versatility - We designed our mattress to be compatible and complementary with most frames and foundations including: traditional frames, box springs, platform frames, slatted frames, bunky boards, and adjustable frames
  • Questions - We pride ourselves on customer service and urge you to reach out to us directly if you have any questions at any point, our expert customer service team will be available to help you through any of your hesitations, problems or questions
SaleBestseller No. 9
Rimensy King Mattress, 14 Inch Hybrid Mattress in a Box, Gel Foam Mattress, Individually Wrapped Pocket Coils Innerspring Mattress, Support & Pressure Relief, Medium Firm Feel, 76"*80"*14"
  • SLEEP SOUNDLY - Rimensy 14 inch king size mattress combines the innerspring wrapped coils with the cooling gel memory foam for an optimal sleep experience. The pressure-relieving foam cradles your body shape so you awake free of aches and pains and fresh as a daisy.
  • COOL TO SLEEP ON - The cooling gel particles, air-flow between coils and the hypoallergenic fabrics maintain a comfortable climate all night, making this twin bed more breathable.
  • ISOLATED MOTION - The individually pocketed coils provide enough support for proper spinal alignment and absorb motion disturbance between partners, allowing your deep sleep not to be disturded.
  • KING SIZE BED IN A BOX - Measures 76" W x 80" D x 14" H and supports a maximum weight of 700 lbs. It is compatible with most twin bed frames, such as box spring, floor, slatted base, flat platform or adjustable bed, hospital bed.
  • WORRY-FREE - This medium firm mattresses come with a 10-year warranty. We recommend 72 hours for your new mattress to return to its full shape. Keep enough distance to the mattress when unwrappeing,as it may have a risk to smack people when expanding.For assistance with any problems you may have, please contact our customer support team.
Bestseller No. 10
Modway Jenna 14” Innerspring and Memory Foam King Mattress With Individually Encased Coils, White
  • SLEEP SOUNDLY - Reduce pressure on your hips, back, shoulders, and neck with the contouring support of an individually wrapped pocket coil mattress.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 temperature, at delivery, your mattress may take a bit longer to return to full sized from its compressed state.The expansion time of the mattress will vary as per the surrounding
  • MATTRESS FOR COUPLES - Jenna offers premium comfort for couples and individuals. Limit bounce and absorb motion disturbance between partners with individually encased springs
  • QUALITY MATTRESS - This king memory foam and innerspring mattress includes a fire resistant polyester barrier that meets flammability standards and a 10-year warranty against manufacturer defects
  • INNERSPRING AND MEMORY FOAM MATTRESS- Jenna comes with 9.8” tall individually wrapped coils, 1” responsive foam, 3” convoluted foam padding, and a padded quilted tight-top for a smooth, even feel
  • EASY SET-UP - Enjoy rejuvinating sleep in no time. Position the mattress box next to your bed. Unbox, unwrap, then unroll and place in your desired spot. Allow up to 24 hrs to expand fully


How Do You Buy The Best Extra Firm King Mattress?


Do you get stressed out thinking about shopping for a great Extra Firm King Mattress? Do doubts keep creeping into your mind? We understand because we’ve already gone through the whole process of researching Extra Firm King Mattress, which is why we have assembled a comprehensive list of the greatest Extra Firm King Mattress available in the current market. We’ve also come up with a list of questions that you probably have yourself.


We’ve done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Extra Firm King Mattress that you consider buying. Your questions might include the following:

  • Is it worth buying an Extra Firm King Mattress?
  • What benefits are there with buying an Extra Firm King Mattress?
  • What factors deserve consideration when shopping for an effective Extra Firm King Mattress?
  • Why is it crucial to invest in any Extra Firm King Mattress, much less the best one?
  • Which Extra Firm King Mattress are good in the current market?
  • Where can you find information like this about Extra Firm King Mattress?

We’re convinced that you likely have far more questions than just these regarding Extra Firm King Mattress, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.


Potential sources can include buying guides for Extra Firm King Mattress, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best possible Extra Firm King Mattress. Make sure that you are only using trustworthy and credible websites and sources.


We provide an Extra Firm King Mattress buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Extra Firm King Mattress currently available on the market.


This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:


  1. Brand Value: Every brand of Extra Firm King Mattress has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an Extra Firm King Mattress?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: his simply is how much bang for the buck you get from your Extra Firm King Mattress.
  5. Customer Ratings: Number ratings grade Extra Firm King Mattress objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Extra Firm King Mattress.
  7. Product Quality: You don’t always get what you pay for with an Extra Firm King Mattress, sometimes less, and sometimes more.
  8. Product Reliability: ow sturdy and durable an Extra Firm King Mattress is should be an indication of how long it will work out for you. .

We always remember that maintaining Extra Firm King Mattress information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.


If you think that anything we present here regarding Extra Firm King Mattress is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us page.

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