extra firm king mattress

SaleBestseller No. 1
Ashley Chime 12 Inch Plush Hybrid Mattress - CertiPUR-US Certified Foam, King
  • King size bed in a box: For supportive, dreamy sleeping, this mattress brings it home with comfortable layers; Plus, it comes in a box, so it's easier than ever to get a better night's rest
  • Hybrid mattress: Mattress is designed with gel memory foam, upholstery grade comfort support foam, and 360 individual power packed wrapped coils for maximum lumbar support. Quilt foam gives you that soft, cozy comfort you crave
  • Maintenance free: Made of hypoallergenic material to keep out dust mites, pollen, mold and pet dander—perfect for kids or adults who suffer from allergies.2 perimeter rows of 9 inch 13-gauge pocketed coils
  • King size: Measures 76" W x 79.5" D x 12" H and is compatible with most king bed frames
  • Ready for instant enjoyment: Arrives in a box. Simply unbox, cut the protective wrap, unroll and watch the mattress expand. Mattress is safe to sleep on immediately but can take 72+ hours for any risidual odors from packaging to dissipate and for mattress to completely expand based on ambient room temperature, humidity, air pressure & ventilation.
Bestseller No. 2
Ashley Chime 12 Inch Medium Firm Memory Foam Mattress - CertiPUR-US Certfied, King
  • King size bed in a box: For deep sleep you've always dreamed of, this body contouring memory foam mattress delivers; 12" mattress comes compressed and rolled in a box for your convenience
  • Sleep soundly: Designed with layers of memory foam for firm support and pressure relief. The support foam core reduces motion transfer for peaceful, undisturbed sleep
  • Maintenance free: Made of hypoallergenic material to keep out dust mites, pollen, mold and pet dander—perfect for kids or adults who suffer from allergies
  • King size: Measures 75" W x 79" D x 12" H and is compatible with most king bed frames
  • Ready for instant enjoyment: Arrives in a box. Simply unbox, cut the protective wrap, unroll and watch the mattress expand. The mattress is safe to sleep on immediately but can take 72+ hours for any residual odors from packaging to dissipate and for mattress to completely expand based on ambient room temperature, humidity, air pressure & ventilation.
SaleBestseller No. 3
Zinus 12 Inch Support Plus Pocket Spring Hybrid Mattress with Euro Top / Extra Firm Feel / More Coils for Durable Support / Pocket Innersprings for Motion Isolation / Bed-in-a-Box, King
  • FIRM SUPPORT, PLUS MORE - Our firmest mattress ever is engineered with 10% more heavy gauge steel iCoil pocket innersprings for added stability and extra firmness, ideal for stomach sleepers and plus-sized individuals
  • SUPPORTIVE FOAM & POCKET SPRINGS - 1.25 inches soft comfort foam, 2.5 total inches durable high-density foam and 7.5 motion-isolating iCoil pocket springs with a microfiber-filled euro top and quilted jacquard cover
  • 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. 4
Beautyrest Silver BRS900 12 inch Extra Firm Innerspring Mattress, King, Mattress Only
  • Dual Cool Cover - Designed to help keep your mattress cool and fresh while pulling heat and moisture away from your body
  • AirCool And Gel Memory Foam - This combination of foam conforms to your body's curves and offers support, it also promotes airflow through the mattress which helps regulate temperature to keep you comfortable all night long
  • 900 Series Firm Pocketed Coils - Individually pocketed coils help isolate motion. Our coils also move individually to support the natural shape of your body for comfortable conforming support
  • No Flip Design - The Energy Foam utilized below the coils creates a supportive and durable foundation, which eliminates needing to flip the mattress
  • Edge-To-Edge Support - Utilizing BeautyEdge Foam on the edges of the mattress provides more consistent comfort and a more stable edge-to-edge sleeping area
Bestseller No. 5
LUCID 10 Inch Memory Foam Firm Feel – Gel Infusion – Hypoallergenic Bamboo Charcoal – Breathable Cover Bed Mattress Conventional (King)
  • This mattress features a 10-inch FIRM feel ideal for side, back, and stomach sleepers that crave more support and less sink
  • Gel infused memory foam regulates temperature while conforming to the body to ease pressure points
  • The 2.5-inch ventilated gel memory foam top layer creates a cooler sleep experience than traditional memory foam by helping to regulate body temperature and increase circulation
  • 1 inch of transition foam and 6.5 inches of dense bamboo charcoal infused support foam provide extra stability and full body support
  • We only use CertiPUR US certified memory foam to ensure your uncompromising safety and comfort
Bestseller No. 6
Zinus 12 Inch Gel-Infused Green Tea Memory Foam Mattress / 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 - 2 inch ultra-cooling gel and green tea infused memory foam, 3 inches soft comfort foam, and 7 total inches durable high density base support foam; ideal for side sleepers and 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. 7
Novilla King Size Mattress, 12 inch Gel Memory Foam King Mattress for a Cool Sleep & Pressure Relief, Medium Firm Feel with Motion Isolating
  • COOL & HIGHLY BREATHABLE- Novilla king size mattress constructed with a 4-layer all-foam system. The foam mattress on top is a gel-infused memory foam that keeps you cool. The egg crate designed foam layer increases airflow through all areas of this king size memory foam mattress. Mattresses’ quality cover with Bamboo fabrics also enhance 30% breath-ability. Ensures you stay asleep longer with this bed mattress.
  • 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. Removable bed mattress cover use skin-friendly rayon cotton 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.
  • HASSLE FREE FOR RETURN & REFUND- Mattresses are covered by a 10-year limit and 30-days money-back return policy. With our professional customer care, we help deal with any dissatisfaction problems. You can enjoy this king memory foam mattress without concerns while you are following your dream.
Bestseller No. 8
Vibe 12-Inch Gel Memory Foam Mattress (Only) - King
  • 2 inches of gel-infused memory foam combined 3 inches of gel-infused foam, draws heat away from your body for a more comfortable night's sleep
  • 7 inches of conforming high-density base foam provides surrounding support and responsive relief that helps evenly distribute pressure points in any sleeping position
  • Medium-Plush Feel and Adjustable Base Friendly, includes Vibe Premium Waterproof Mattress Pad
  • High-quality memory foam conforms to your body while the cool gel regulates temperature; memory foam is naturally hypoallergenic and resistant to allergens, mold, bacteria, and dust mites and meets CertiPUR-US program standards for performance, emissions, and durability
  • King Size Mattress: 76" W x 80" L x 12" H
SaleBestseller No. 9
Sealy Response Performance 13-Inch Cushion Firm Eurotop Mattress, King, Made in USA
  • 13-INCH MATTRESS: Cushion Firm mattress with exclusive Response Coil System to provide the perfect balance of comfort and deep down support for a superior night’s rest.
  • POSTURPEDIC TECHNOLOGY: Delivers reinforced support under the heaviest part of the body, for even more support where it’s needed most.
  • LAYERS OF COMFORT: Designed with 3-inches of SealySupport Firm Foam and 1-inch of SealyCushion Extra Soft Foam, a high quality foam for a supportive feel plus SealyCool Cooling Gel Memory Foam for additional support. Equipped with 2-inches of SealyCushion Air Foam that allows additional airflow and softness, plus a ComfortLoft Cover, a soft knit fabric with durable spun yarns for a plush feel.
  • DURABLE EDGE: Incorporates a SolidEdge HD System, a reinforced foam border around the mattress edge to maximize the mattress surface, as well as providing a solid seating surface.
  • 10-YEAR : 10-Year for comfort you can rely on.
Bestseller No. 10
Linenspa 8 Inch Memory Foam and Innerspring Hybrid-Mattress - Medium-Firm Feel - King
  • 8 inch hybrid mattress combine hypallergenic memory foam with the traditional support of an innerspring mattress for a medium-firm feel perfect for kids rooms, guest beds, or an affordable low-profile option
  • A plush layer of memory foam helps align the spine to minimize pressure points for increased comfort
  • Finished with a cozy knit cover, this mattress is compressed as a bed in a box for convenient delivery and setup
  • Available in a medium firm 8 inch profile, a medium 10 inch profile, or a plush 12 inch profile that also features gel infusions and individually encased coils
  • Packaging process may leave small brown flecks called carbons in the mattress packaging; These carbons are harmless pieces of plastic and will not stick to your mattress; 10 year limited warranty

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