Furniture › Bedroom Furniture › Mattresses & Boxsprings › King › extra firm

King Firm 12" Memory Foam Mattress - White Noise Poar Reversible Plush | 80 H x 76 W 12 D in Wayfair 7C464F3B609F4F5F81B22068ECEC5011

Two different comfort options all in one mattress! This unique 12-inch reversible mattress will change the way you sleep by allowing you to choose a plush or firm side. The Feran Ice cover keeps you cool while you rest and the G Flex cool Gel memory... more

King Firm 10" Innerspring Mattress - Sealy Essentials Osage Tight Top | 80 H x 76 W 10 D in Wayfair 52875761

Perfect for guest beds, spare beds, and kids’ rooms, this spring mattress with a firm feel features response open coils and a seal support gel foam layer for an on-the-bed feeling. It’s a great night’s sleep at an affordable price. Mattress Size: King... more

King Firm 14" Mattress - Sealy Posturepedic Plus Tight Top & Box Spring Set | 80 H x 60 W 14 D in Wayfair 42729461

An upgraded spring mattress with motion-reducing encased coils targeted back and core support, and a reinforced edge for increased durability. The antibacterial, soft knit cover helps to keep you cool, and your mattress protected. Firm feel. Box Spring... more

King Firm Foam Mattress - Legacy Medium Size (76"x80"x8") Only Fully Assembled, Good For Your Back, Long Lasting & 2 Sided By Alwyn Home Wayfair

Do you want to have a good sleep for an affordable price? Then get the Legacy Orthopedic Double-Sided King Size Mattress Only by Alwyn Home. This mattress is smartly engineered to treat you to a comfortable experience when you turn in for the night.... more

King Firm 10" Foam Mattress - Alwyn Home Delilah Top Type | 84 H x 72 W 10 D in Wayfair B2844C8B8F314C8797C0E035D625D69D

The beautiful rest mattress is a medium plush foam encased, euro top mattress innerspring mattress. This will meet your “dream” goal of comfort, quality & beauty. 13 3/4 sh gauge units, foam encased with high-density foam, and 1" high-density fiber pad... more

King Firm 12" Latex Mattress - PlushBeds Luxury Bliss | 80 H x 76 W 12 D in Wayfair LUXBLMF1208

Rediscover the joy of comfortable sleep with our Luxury Organic Hybrid Latex Mattress. Crafted with care using certified organic and sustainable materials, including natural latex, GOTS-certified organic wool and cotton, and premium fabric-encased... more

King Firm 12" Hybrid Mattress - Kingsdown Prime Rosenberry | 80 H x 76 W 12 D in Wayfair FG-22075-TT1-KH

The Kingsdown Prime collection provides luxury sleep at an exceptional value. Featuring consistent, edge-to-edge support with a luxury cooling cover, the Prime Rosenberry Firm is assured to transform your nights into great days. For those preferring... more

King Firm 15" Hybrid Mattress - Beautyrest Black KX-Class | 79.5 H x 83.5 W 15 D in Wayfair 700811496-1060

Elevate your sleep to a luxurious reward night after night. Our most advanced collection yet, the Beautyrest black hybrid 15" firm mattress offers up to 21% more support where your body needs it the most. With help from our new plant-based cooling... more

King Firm 13.75" Innerspring Mattress - Beautyrest Black C-Class Mattress, Latex | 72 H x 83.5 W 13.75 D in Wayfair 700811474-1060

Elevate your sleep to a luxurious reward night after night. As a part of our most advanced collection yet, the Beautyrest black C-class 13.75" firm mattress offers up to 21% more support where your body needs it the most. With help from our new... more

King Firm 15.75" Innerspring Mattress - Beautyrest Black K-Class Pillow Top Mattress, Latex | 74.5 H x 83.5 W 15.75 D in Wayfair 700811479-1060

Elevate your sleep to a luxurious reward night after night. As the premier offering in our most advanced collection yet, the Beautyrest Black K-Class 15.75" Firm Pillow Top Mattress offers up to 21% more support where your body needs it the most.* With... more

Queen Medium Firm 6" Memory Foam Mattress - Nap Anula, Green Tea Mattress, Bed in a Box | 80 H x 60 W 6 D Wayfair NQMG06QQ

At NapQueen, we are dedicated to enhancing your sleep quality and providing unmatched comfort each time you retire to bed. Our selection of premium-quality mattresses incorporates innovative technologies and high-quality materials to deliver a sleeping... more

King Firm 11" Innerspring Mattress - Sealy Posturepedic Mill Park Ultra Tight Top & Box Spring Set | 80 H x 76 W 11 D in Wayfair 42952461

This mattress features the trusted motion-reducing encased coils and targeted memory foam support of similar Posturepedic Spring mattresses with an ultra firm feel. A reinforced edge improves durability, while cover treatments help to keep you cool,... more

King Firm 12" Innerspring Mattress - Alwyn Home Call & Bed Frame Box Spring, Metal | 80 H x 76 W 12 D in Wayfair 9C12439B88884B56876DE9A1F5695334

Do you want to have a good nights sleep without losing any sleep? Then get the affordable Comfort Rest Gentle Firm Mattress Set with Bed Frame by Alwyn Home. This mattress is smartly engineered to treat you to a comfortable experience when you turn in... more

King Firm 14" Gel/Foam Mattress - ComforPedic Loft from the Beautyrest Gel Memory Foam | 80 H x 76 W 14 D in Wayfair 35602-04794-WF

Elevate your sleep experience with the ComforPedic Loft from the Beautyrest gel memory foam mattress. This upscale gel memory foam mattress provides three layers of support for a luxuriously comfortable sleeping experience. The gel memory foam mattress... more

King Firm 14" Gel/Foam Mattress - Wayfair Sleep™ Gel Memory Foam | 84 H x 76 W 14 D in F6BAFE7E9391441FB2BA76C292C66B59

Truly luxurious comfort awaits with the 14” Firm Gel Memory Foam Mattress. This mattress has a top layer of latex-like foam that keeps you sleeping on top of your mattress instead of sinking into it and provides more responsive comfort. Underneath... more

King Firm 12" Foam Mattress - The Twillery Co.® Marcela Hybrid Cooling Fast Responding Latex & Coil in Brown | 80 H x 76 W 12 D Wayfair

Experience ultimate comfort on the Marcela 12" Hybrid Mattress. The 6 layer craftsmanship features a breathable, cooling Blue Ice Yarn knit cover, Cooling Copper Infused Memory Air Foam, fast-responding, hypoallergenic Talalay Latex Foam, high-density... more

King Firm 6" Gel/Foam Mattress - Alwyn Home Driffield Medium-Firm Gel Memory Foam Sofa Bed | 80 H x 76 W 6 D in Wayfair

Our tri-fold mattress offers versatile functionality, easily converting between a recliner, a sofa, and a bed to accommodate various needs. Whether you're hosting guests, playing games with your kids, traveling, camping, or practicing yoga, this... more

King Firm 14" Gel/Foam Mattress - RELYMATRE Medium-Firm Gel Memory Foam | 80 H x 76 W 14 D in Wayfair RE-MSKI0114

The 14-inch Memory Foam Hybrid Mattress is the perfect combination of soft and firm. It ensures that your body weight is evenly distributed and your spine is naturally aligned. Enjoy a restful night's sleep whether you're lying on your back, side or... more

Queen Firm 10" Gel/Foam Mattress - Dynasty Medium-Firm Gel Memory Foam | 80 H x 76 W 10 D in Wayfair CB10-MFRIM-EK-US

Features:Mattress Size (Mattress Size: King): KingMattress Size (Mattress Size: Queen): QueenComfort Level: Medium-FirmMattress Top Type: Pillow TopFoam Type: Gel memory foamFoam Cell Type: Specialty Foam Infusion: Box Spring Included: NoAdjustable... more

King Firm 10" Gel/Foam Mattress - Alwyn Home Rilla Medium-Firm Gel Memory Foam | 80 H x 76 W 10 D in Wayfair 61A1F56E87D44012B5A9C7D8ECAE56E6

This gel memory foam mattress utilizes advanced sleep technology, combining the pressure-relieving properties of memory foam with the temperature regulation features of gel to offer an unparalleled sleeping experience. The memory foam layer adapts to... more

King Firm 12" Gel/Foam Mattress - Nap Queen Machka Medium-Firm Gel Memory Foam | 80 H x 76 W 12 D in Wayfair NQEM12KK

"Experience the epitome of luxury and comfort with the Nap Elite Series Machka Hybrid Mattress, a premium sleep solution meticulously. Elevate your nightly rest with a mattress designed to exceed expectations and redefine the way you sleep. At its core... more

Twin Firm 8" Gel/Foam Mattress - Alwyn Home Blane Medium-Firm Gel Memory Foam Mattresses | 80 H x 76 W 8 D in Wayfair

Features:Strict packing: The mattress is compressed into a sturdy plastic bag and protected by a cardboard box. When you need to use it, just open the plastic bag and unwrap the mattress. The mattress will return to its original shape within 6 hours.... more

King Firm 10" Gel/Foam Mattress - GoodVibeSleep Ease Medium-Firm Gel Memory Foam & Adjustable Base | 80 H x 76 W 10 D in Wayfair ZGVS-ADJ-AFGVES-KG

Join the revolution in sleep technology with the GoodVibeSleep Comfort Ensemble. This innovative set is not merely an adjustable bed base with mattress, it is the future of entertainment and rest. This specialty mattress and adjustable base combination... more

Queen Firm 10" Gel/Foam Mattress - Dynasty Medium-Firm Gel Memory Foam | 80 H x 76 W 10 D in Wayfair CB10-MFRIM-EK-US

Features:Mattress Size (Mattress Size: King): KingMattress Size (Mattress Size: Queen): QueenComfort Level: Medium-FirmMattress Top Type: Pillow TopFoam Type: Gel memory foamFoam Cell Type: Specialty Foam Infusion: Box Spring Included: NoAdjustable... more

King Firm 8" Hybrid Mattress - PlushBeds Medium-Firm Eco Bliss Latex | 80 H x 76 W 8 D in Wayfair ECOBLMF0806

Indulge in the ultimate sleep experience with our Eco Bliss hybrid latex mattress, blending the opulence and durability of organic latex with the affordability of a hybrid design. Step into a realm of unparalleled comfort and value, at a cost of less... more

King Firm 12" Gel/Foam Mattress - Alwyn Home Rockport Medium-Firm Gel Memory Foam | 80 H x 76 W 12 D in Wayfair E4229EBB03D84EC8BF77D5CD4D071CE8

ACTNAME foam mattress is newly upgraded to give you enough comfort. Black and white color combination with simple look. Bring infinite possibilities to your bedroom decoration. Selected with excellent quality memory foam to give you enough comfort for... more

King Firm 12" Hybrid Mattress - Avenco Medium-Firm Pillow Top | 80 H x 76 W 12 D in Wayfair AC-THCD-002-K-HK3

If you are looking for a hybrid mattress that combines comfort and support, these firm pillow top hybrid mattresses are perfect for you. Aveeno 12'' hybrid mattress fully limits bounce and absorbs motion disturbance between partners with individually... more

Full Firm Gel/Foam Mattress - Best Choice Products 12in King Size 2-Layer Medium-Firm Charcoal Gel & Green Tea Infused Memory Foam Wayfair SKY5574

Features:MOISTURE-WICKING CHARCOAL GEL: Bamboo charcoal and gel-infused memory foam helps eliminate odors, regulate temperature, and absorb moisture to inhibit airborne irritantsANTI ODOR GREEN TEA LAYER: All natural green tea infused memory foam... more

King Firm 12" Hybrid Mattress - Martha Stewart SleepComplete Medium-Firm | 80 H x 76 W 12 D in Wayfair CL-MODE1-12K-MS

Inspired by Martha Stewarts approach to functional, organized living, SleepComplete by Martha Stewart marries a new assortment of premium mattresses with a simple system to determine your best sleep solution. From sleep surface to base, the hybrid... more

King Firm 9" Hybrid Mattress - The Twillery Co.® Krause Motion Isolating & Pressure Relieving Medium-Firm | 80 H x 76 W 13 D in Wayfair

This mattress has Pocketprings. With their independent springs that minimize motion transfer and provide body pressure relief, Pocket mattresses are a great option for almost anyone. Mattress Size: King, Box Spring Height: Low Profile (4") | King Firm... more

King Firm 8" Hybrid Mattress - PlushBeds Medium-Firm Eco Bliss Latex | 80 H x 76 W 8 D in Wayfair ECOBLMF0808

Indulge in the ultimate sleep experience with our Eco Bliss hybrid latex mattress, blending the opulence and durability of organic latex with the affordability of a hybrid design. Step into a realm of unparalleled comfort and value, at a cost of less... more

King Firm 12" Innerspring Mattress - Kingsdown Cushion Firm, Multi-Layered, Cool Quilted Top Luxury Mattress, Prime Parkman | 80 H x 76 W 12 D in Wayfair

The Prime Parkman collection provides luxury sleep at an exceptional value. Featuring consistent, edge-to-edge support with a luxury cooling cover, the Prime Parkman Firm Innerspring Mattress is assured to transform your nights into great days at a... more

King Firm 12" Mattress - White Noise 12-inch Zoned Reactive w/ Zipper, Medium Firm, Breathable, Machine Washable | 80 H x 76 W 12 D in Wayfair

The Zoned mattress has 4 specialty targeted zones designed for specific regions of the body. Each zone provides the perfect amount of conformity to keep the spine in a neutral position, allowing you to rest easily. The gel-infused foams and Flex-air... more

King Firm 10" Memory Foam Mattress - Ergo-Pedic Zencloud Original Infused Medium-Firm in Brown | 80 H x 76 W 10 D Wayfair F10CBDPK80

REDEFINING THE SCIENCE OF SLEEP. Upgrade your current beds with the world’s first high-performance mattresses designed to promote health benefits beyond the mechanics of simple physical comfort. At Ergo-Pedic Sleep, we’ve developed our mattresses to be... more

King Firm 12" Mattress - White Noise 12-inch Zoned Reactive w/ Zipper, Medium Firm, Breathable, Machine Washable | 80 H x 76 W 12 D in Wayfair

The Zoned mattress has 4 specialty targeted zones designed for specific regions of the body. Each zone provides the perfect amount of conformity to keep the spine in a neutral position, allowing you to rest easily. The gel-infused foams and Flex-air... more

Queen Firm 12" Gel/Foam Mattress - Best Choice Products 12in King Size 2-Layer Medium-Firm Charcoal Gel & Green Tea Infused Memory Foam | 80 H x 76 W 12 D in Wayfair

Features:MOISTURE-WICKING CHARCOAL GEL: Bamboo charcoal and gel-infused memory foam helps eliminate odors, regulate temperature, and absorb moisture to inhibit airborne irritantsANTI ODOR GREEN TEA LAYER: All natural green tea infused memory foam... more

King Firm 8" Innerspring Mattress - Wayfair Sleep™ Medium-Firm Pillow Top | 79 H x 75 W 8 D in WFSP08KKFRSP

This mattress combines the traditional comfort of springs with the contouring comfort of memory foam for a versatile hybrid design that sleepers of all styles will love. A top memory foam layer responds to your body to provide customized support while... more

Twin Firm 8" Gel/Foam Mattress - Alwyn Home Blane Medium-Firm Gel Memory Foam Mattresses | 84 H x 72 W 8 D in Wayfair

Features:Strict packing: The mattress is compressed into a sturdy plastic bag and protected by a cardboard box. When you need to use it, just open the plastic bag and unwrap the mattress. The mattress will return to its original shape within 6 hours.... more