Top 10 Extra Firm Mattress King – Mattresses

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1. Zinus

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King, ZINUS 12 Inch Support Plus Pocket Spring Hybrid Mattress / Extra Firm Feel / Heavier Coils for Durable Support / Pocket Innersprings for Motion Isolation / Mattress-in-a-Box

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Zinus #ad - Certipur us certified - highest quality foam is CertiPUR-US Certified for durability, performance, and content. Firm support, plus more - our firmest mattress ever is engineered with heavier gauge steel independent pocket innersprings for added stability and extra firmness, ideal for stomach sleepers and plus-sized individuals.

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. Supportive foam & pocket springs - soft comfort foam, durable high-density foam and motion-isolating independent pocket springs with a quilted jacquard cover offer a firm feel that’s perfect for stomach sleepers and those who enjoy a very firm mattress.

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.
BrandZinus #ad
ManufacturerZinus #ad
Height12 Inches
Length80 Inches
Weight108.82 Pounds
Width76 Inches
Part NumberAZ-PPSM-12K
ModelAZ-PPSM-12K

2. Signature Design by Ashley

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King, CertiPUR-US Certified, Signature Design by Ashley Chime 12 Inch Medium Firm Memory Foam Mattress

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Signature Design by Ashley #ad - For every taste and budget. Memory foam mattress: for sound sleep you've always dreamed of. Simply unbox, cut the protective wrap, unroll and watch the mattress expand. Direct from the manufacturer: Ashley Furniture goes the extra mile to package, protect and deliver your purchase in a timely manner.

Quick expansion: mattress is safe to sleep on immediately but can take 72 plus hours for any residual odors from packaging to dissipate and for mattress to completely expand based on ambient room temperature, humidity, air pressure & ventilation. Buy with confidence: designed and manufactured by Ashley Furniture Industries. The trusted source for stylish furniture, lighting, rugs, accessories and mattresses. King size: measures 71" w x 79" d x 12" h and is compatible with most king bed frames.

Plush support: thick layers of memory foam contour to your body and deliver amazing support, pressure relief and comfort for all types of sleepers. This body contouring memory foam mattress delivers amazing support, pressure relief and comfort. Ready for instant enjoyment: Arrives in a box. Bed foundation, box spring and frame available, sold separately. The support foam core reduces motion transfer for peaceful, undisturbed sleep.
BrandSignature Design by Ashley #ad
ManufacturerAshley Furniture #ad
Height12 Inches
Length74 Inches
Width75 Inches
Part NumberM72741
ModelM72741

3. Novilla

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Medium Firm Bed Mattress, Novilla 10 inch Gel Memory Foam King Size Mattress for Cool Sleep & Pressure Relief, Bliss, King Mattress

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Novilla #ad - With our professional customer care, we help deal with any dissatisfaction problems. Removable bed mattress cover use skin-friendly rayon fabric, heavenly soft to touch. This medium firm mattress is made of gel memory foam combined with comfort foam, which aligns your spine and evenly disperses your body weight to relieve pressure points while you are sleeping.

Novilla king memory foam mattress gives you a healthier and cloud-like experience. Get up without any pains- novilla king size mattress with 4 layers all-foam system, plus high-density foam underneath, the foam mattress not too soft nor too firm for all sleep positions. It is easy to set up and fits all kinds of king 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 warranty and 30-days money-back return policy.

Follow the instructions and see how the magic happens. The middle foam layer is designed as an airflow channel to increase airflow through all areas of this king foam mattress. Odorless & plush feel- mattresses are made of certipur-us certified foam, without any harmful off-gassing and substances like formaldehyde, mercury, and other heavy metals. King mattress in a box & fits all bed frames- such fun to receive a mattress that’s rolled and compressed in a box. You can enjoy this memory foam king mattress without concerns while you are following your dream.
BrandNovilla #ad
ManufacturerNovilla #ad
Height10 Inches
Length76 Inches
Weight65.21 Pounds
Width80 Inches
Part NumberNV0M801-10-K
ModelNV0M801-10-K

4. LUCID

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King, LUCID 10 Inch Memory Foam Firm Feel – Gel Infusion – Hypoallergenic Bamboo Charcoal – Breathable Cover Bed Mattress Conventional

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LUCID #ad - 1 inch of transition foam and 6. 5 inches of dense bamboo charcoal infused support foam provide extra stability and full body support. 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. Compressed, rolled, and shipped in a box for simple setup; easily fits through narrow hallways and staircases. 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. We only use certipur uS certified memory foam to ensure your uncompromising safety and comfort. Dimensions: 76" x 80" x 10".
BrandLUCID #ad
ManufacturerLUCID #ad
Height10 Inches
Length80 Inches
Weight58.5 Pounds
Width76 Inches
Part NumberLU10KKFR30GF
ModelLU10KKFR30GF
Warranty10 year warranty.

5. Olee Sleep

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Olee Sleep 13 inch Galaxy Hybrid Gel Infused Memory Foam and Pocket Spring Mattress King

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Olee Sleep #ad - To ensure that this mattress lasts many years, its coils are protected by multi HD and memory foam layers which add to unparalleled quality and incredible comfort. Composed of 5 layers includes pocket spring. 10 year limited Manufacture warranty. Memory foam adapt to your body shape and temperature. Gel infused memory foam regulates temperature while conforming to the body to ease pressure points.
BrandOlee Sleep #ad
ManufacturerGrantec co.,LTD #ad
Height13 Inches
Length80 Inches
Weight106.56 Pounds
Width76 Inches
Part NumberOLR13SM01K
ModelOLR13SM01K
Warranty10years limited manufacturer warranty.

6. Vibe

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King, Vibe Gel Memory Foam 12-Inch Mattress | CertiPUR-US Certified | Bed-in-a-Box

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Vibe #ad - 7 inches of conforming high-density base foam provides surrounding support and responsive relief that helps evenly distribute pressure points in any sleeping position.

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. 76" w x 80" l x 12" H. Medium-plush Feel and Adjustable Base Friendly. Mattress ships compressed, rolled and shipped in a box conveniently delivered to your door for easy set-up; frame/foundation/base not included. High-quality memory foam conforms to your body while the cool gel regulates body temperature; porous, emissions, open cell design allows for a greater circulation and meets CertiPUR-US program standards for performance, and durability.
BrandVibe #ad
ManufacturerClassic Brands #ad
Height12 Inches
Length80 Inches
Width76 Inches
Part Number410263-1160
Model410263-1160
Warranty10 year warranty.

7. Zinus

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Zinus 10 Inch Green Tea Memory Foam Mattress / CertiPUR-US Certified / Bed-in-a-Box / Pressure Relieving, King

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Zinus #ad - 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. 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, airflow enhancing comfort foam, and 5. 5 inches durable, 2 inches soft, 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.
BrandZinus #ad
ManufacturerZinus #ad
Height10 Inches
Length80 Inches
Weight67.33 Pounds
Width76 Inches
Part NumberAZ-BTCM-10K
ModelAZ-BTCM-10K

8. Classic Brands

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King, Classic Brands Cool Gel Memory Foam 14-Inch Mattress with 2 BONUS Pillows | CertiPUR-US Certified | Bed-in-a-Box

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Classic Brands #ad - Gel infused ventilated memory foam creates a plush and comfortable sleeping surface for a more restful night's sleep; high-density base foam relieves pressure points and conforms to your body, and provides unparalleled support during the night.

76" w x 80" l x 14" H. Beautifully tailored and detailed with a stretch knit fabric cover with waterfall edge and matching knit side panels. Medium-plush feel with firm Support and Adjustable Base Friendly; 10 Year Warranty. Premium pressure-relieving memory foam and high-density aerated cool gel memory foam are combined together to provide the essential support and comfort for a deeper night's sleep.

High-quality memory foam conforms to your body while the cool gel regulates body temperature; porous, emissions, open cell design allows for a greater circulation and meets CertiPUR-US program standards for performance, and durability. Bonus 2-shredded memory Foam Standard Pillows FREE.
BrandClassic Brands #ad
ManufacturerClassic Brands #ad
Height14 Inches
Length80 Inches
Weight94 Pounds
Width76 Inches
Part Number410167-1160
Model410167-1160
Warranty10 year warranty.

9. Modway

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Individually Encased Pocket Coils, Top Quality Quilted Pillow Top, Modway Jenna 14” King Innerspring Mattress, 10-Year Warranty

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Modway #ad - Sleep soundly - reduce pressure on your hips, back, shoulders, and neck with the contouring ability of this firm king mattress with individually wrapped coils and layers of rejuvinating memory foam. Perfect for enabling partners with unique schedules and habits to sleep comfortably.

Isolated motion - limit bounce and absorb motion disturbance between partners with individually encased springs. Easy set-up - simply position the mattress box next to your bed, carefully unbox and unwrap without cutting the mattress, then unroll and place in your desired spot. King innerspring mattress - jenna is a quality king size mattress that comes with a 10-year warranty against manufacturer defects and a fire-resistant polyester barrier to meet flammability standards.

Allow 24 hours to expand fully. Supportive mattress - jenna comes with 9. 84” tall individually wrapped coils, 1” responsive foam, 3” egg crate foam layers, and a padded polyester quilted tight-top for a smooth and even feel.
BrandModway #ad
ManufacturerModway #ad
Height13.5 Inches
Length80 Inches
Weight111 Pounds
Width76 Inches
Part NumberMOD-6085-WHI
ModelUltimate Quilted Pillow Top
WarrantyOne year warranty against manufacturer defects.

10. LUCID

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Memory Foam, Steel Coils, Firm Feel, LUCID 12 Inch Latex Hybrid Mattress, Temperature Neutral, Responsive Latex

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LUCID #ad - 6. 5-inch, isolate motion, high-quality steel coils are individually-wrapped to increase airflow, and conform to individual sleep styles. Perfect mattress for those who want the comfort of memory foam with the hypoallergenic and breathable properties of latex.

100 night risk-free trial: if you are unsatisfied with this mattress, you are eligible for a full refund up to 100 days froM DATE OF RECEIPT. Compressed, rolled, and shipped in a box for simple setup; easily fits through narrow hallways and staircases. Attractive, two-tone cover finishes the elegant look of this mattress; backed by a 10-year warranty against manufacturer defects. Plush memory foam layer is topped with natural latex for the perfect combination of sink and spring.
BrandLUCID #ad
ManufacturerLUCID #ad
Height12 Inches
Length80 Inches
Weight123 Pounds
Width76 Inches
Part NumberLU12KK70LH
ModelLU12KK70LH
Warranty10-year u. S. Warranty guards against manufacturer defect.