Furniture › Bedroom Furniture › Mattresses & Boxsprings › 12 in firm cool gel

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress Set

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Pacific Peace 12" Hybrid Firm Mattress Set

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress Set

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Sweetnight 12-inch Medium Gel Memory Foam Mattress In a Box

Reversible bed mattress provides comfort from soft, medium to medium firm. This 12 in. gel memory foam mattress cover is made of hypoallergenic fabric with heat dissipation, bringing you a safe and cool night. more

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Pacific Peace 12" Hybrid Firm Mattress

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

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

Full Firm 12" Foam Mattress - Lucid Comfort Collection | 75 H x 54 W 12 D in Wayfair LU12FF45MF

Offering the perfect medium-firm feel that's neither too firm nor too plush, this mattress from the lucid comfort collection will change the way you sleep. This mattress features a sure cool gel-infused memory foam surface that alleviates pressure and... more

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress Set

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress Set

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress Set

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

California King 12" Hybrid Mattress - The Twillery Co.® Burntwood Frim | 83 H x 71 W 12 D in Wayfair 17F60E0043624A45B1355C6DA7E60352

This multi-layer hybrid mattress offers a firm, yet comfortable sleeping experience with its combination of gel and graphite-infused memory foam. Designed to keep you cool and provide pressure point relief, it cradles your body shape for a deeper, more... more

Queen 12" Hybrid Mattress - The Twillery Co.® Burntwood Frim | 79 H x 59 W 12 D in Wayfair 945CFD1F497D4FFEB2C9A99DFC359258

This multi-layer hybrid mattress offers a firm, yet comfortable sleeping experience with its combination of gel and graphite-infused memory foam. Designed to keep you cool and provide pressure point relief, it cradles your body shape for a deeper, more... more

Full 12" Hybrid Mattress - The Twillery Co.® Burntwood Frim | 74 H x 53 W 12 D in Wayfair 40AFAE5749734B3EA3F200A97E912B8D

This multi-layer hybrid mattress offers a firm, yet comfortable sleeping experience with its combination of gel and graphite-infused memory foam. Designed to keep you cool and provide pressure point relief, it cradles your body shape for a deeper, more... more

LoftWorks Euro Top Medium Firm Gel Memory Foam Mattress of 8 inch, 10 inch and 12 inch

Bamboo Viscose Rayon Blend Cover Cool & ventilated Memory Foam mattress choose from 8 inch, 10 inch and Reversible 12 inch. 3 layers of memory foam for comfort and support Quilted Top Gel memory Foam for addition comfort Helps reduce pressure points and… more

Twin Firm 12" Foam Mattress - Lucid Comfort Collection | 75 H x 39 W 12 D in Wayfair LU12TT45MF

Offering the perfect medium-firm feel that's neither too firm nor too plush, this mattress from the lucid comfort collection will change the way you sleep. This mattress features a sure cool gel-infused memory foam surface that alleviates pressure and... more

Serta Perfect Sleeper Nurture Night 12" Firm Mattress Set

Featuring an 825-coil density system, this supportive mattress offers zoned comfort and pressure relief with a lumbar gel support band and Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support… more

Serta Perfect Sleeper Nurture Night 12" Firm Mattress Set

Featuring an 825-coil density system, this supportive mattress offers zoned comfort and pressure relief with a lumbar gel support band and Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support… more

Serta Perfect Sleeper Nurture Night 12" Firm Mattress Set

Featuring an 825-coil density system, this supportive mattress offers zoned comfort and pressure relief with a lumbar gel support band and Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support… more

Serta Perfect Sleeper Pacific Peace 12" Hybrid Firm Mattress Set

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Pacific Peace 12" Hybrid Firm Mattress

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Pacific Peace 12" Hybrid Firm Mattress

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Pacific Peace 12" Hybrid Firm Mattress

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress Set

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Pacific Peace 12" Hybrid Firm Mattress Set

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Sweetnight 12-inch Medium Gel Memory Foam Mattress In a Box

Reversible bed mattress provides comfort from soft, medium to medium firm. This 12 in. gel memory foam mattress cover is made of hypoallergenic fabric with heat dissipation, bringing you a safe and cool night. more

Full Firm 12" Gel/Foam Mattress - Vibe Gel Memory Foam 12-Inch | CertiPUR-US Certified Bed-in-a-Box 75 H x 54 W 12 D in Wayfair 20.2146.23.02.96

Good mornings, good feelings, good times, good Vibe. The Vibe 12-inch Gel Memory Foam Mattress combines two leading sleep technologies at an incredible value. Gel-infused memory foam keeps you cool during sleep and body-contouring memory foam reduces... more

Twin Firm 12" Gel/Foam Mattress - The Twillery Co.® Gel Memory Foam | 80 H x 39 W 12 D in Wayfair 0DFC20C20D034C1F814A3B16579B709E

This 12" thick mattress features a tight top and low-motion transfer, so it's designed to let you stay asleep even if your partner tosses and turns. Two layers of firm gel memory foam provide a firm foundation and a breathable design to help cool you... more

Serta Perfect Sleeper Nurture Night 12" Firm Mattress

Featuring an 825-coil density system, this supportive mattress offers zoned comfort and pressure relief with a lumbar gel support band and Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support… more

Serta Perfect Sleeper Nurture Night 12" Firm Mattress

Featuring an 825-coil density system, this supportive mattress offers zoned comfort and pressure relief with a lumbar gel support band and Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support… more

Serta Perfect Sleeper Nurture Night 12" Firm Mattress Set

Featuring an 825-coil density system, this supportive mattress offers zoned comfort and pressure relief with a lumbar gel support band and Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support… more

Serta Perfect Sleeper Nurture Night 12" Firm Mattress

Featuring an 825-coil density system, this supportive mattress offers zoned comfort and pressure relief with a lumbar gel support band and Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support… more

Serta Perfect Sleeper Pacific Peace 12" Hybrid Firm Mattress Set

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress

Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support. more

California King Firm 12" Gel/Foam Mattress - Vibe Gel Memory Foam 12-Inch | CertiPUR-US Certified Bed-in-a-Box 84 H x 72 W 12 D in Wayfair

Good mornings, good feelings, good times, good Vibe. The Vibe 12-inch Gel Memory Foam Mattress combines two leading sleep technologies at an incredible value. Gel-infused memory foam keeps you cool during sleep and body-contouring memory foam reduces... more

King Firm 12" Gel/Foam Mattress - Vibe Gel Memory Foam 12-Inch | CertiPUR-US Certified Bed-in-a-Box 80 H x 76 W 12 D in Wayfair 20.2146.23.04.96

Good mornings, good feelings, good times, good Vibe. The Vibe 12-inch Gel Memory Foam Mattress combines two leading sleep technologies at an incredible value. Gel-infused memory foam keeps you cool during sleep and body-contouring memory foam reduces... more