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    California King Medium 12" Foam Mattress - Simmons PeacefulSleep Pillow Top | 79.5 H x 83.5 W 12 D in Wayfair 700812691-1070

    California King Medium 12" Foam Mattress - Simmons PeacefulSleep Pillow Top | 79.5 H x 83.5 W 12 D in Wayfair 700812691-1070

    The mattress brings you seriously satisfying sleep at prices that won't break the bank. With a traditional quilted top panel, our innerspring models feature first-rate foams to meet your comfort needs, a base layer for sink-free support, and... more

    $1,168.00 $799.99

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    California King 12.75" Innerspring Mattress - Simmons Alexandria Plush | 72 H x 83.5 W 12.75 D in Wayfair 700812627-1070

    California King 12.75" Innerspring Mattress - Simmons Alexandria Plush | 72 H x 83.5 W 12.75 D in Wayfair 700812627-1070

    Simmons Alexandria 12.75 Innerspring Plush Mattress delivers the mattress you don't have to think about, at a price you don't need to worry about. This mattress does not disappoint. It comes with the perfect combination of top-quality foams tailored to... more

    $1,160.00 $849.99

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    Best Seller
    California King 12" Hybrid Mattress - Simmons PeacefulSleep Plush | 79.5 H x 83.5 W 12 D in Wayfair 700812694-1070

    California King 12" Hybrid Mattress - Simmons PeacefulSleep Plush | 79.5 H x 83.5 W 12 D in Wayfair 700812694-1070

    The mattress brings you seriously satisfying sleep at prices that won't break the bank. With a traditional quilted top panel, our innerspring models feature first-rate foams to meet your comfort needs, a base layer for sink-free support, and... more

    $1,427.00 $849.99

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    12 Inch Featuring Graphene Memory Foam Mattress Cooling Fibers Fabric Mattress CertiPUR-US Firm Feel California King,White

    12 Inch Featuring Graphene Memory Foam Mattress Cooling Fibers Fabric Mattress CertiPUR-US Firm Feel California King,White

    Elevate your sleep experience with the comfortable Memory Foam Mattress. Its contemporary styling, featuring a stylish gray raised textured side border and a black welt detail, complements any bedroom decor. more

    $2,224.99

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    Copper Infused Hybrid 12 In Soft Memory Foam California King Mattress

    Copper Infused Hybrid 12 In Soft Memory Foam California King Mattress

    Description Copper Infused Hybrid Mattress is where the best of technologies come together. The cooling cover, copper-infused memory foam, and edge support perimeter coils provide a cool sleep all night. more

    $741.49

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    14-Inch California King Hybrid Mattress, Copper Infused Memory Foam Mattress, CertiPUR-US, White - California King

    14-Inch California King Hybrid Mattress, Copper Infused Memory Foam Mattress, CertiPUR-US, White - California King

    Elevate your nightly rest with the California King Copper Cool Hybrid Waterfall-Top 12" Mattress. more

    $1,922.49

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    Signature Design Chime 12 Inch Memory Foam California King Mattress in White - Ashley Furniture M72751

    Signature Design Chime 12 Inch Memory Foam California King Mattress in White - Ashley Furniture M72751

    Signature Design Chime 12 Inch Memory Foam California King Mattress in White - Ashley Furniture M72751 When it comes to your comfort, discover the Ashley-Sleep® California king mattress. Its memory foam layer contours to your body delivering amazing... more

    $401.99

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    California King Firm 12" Gel/Foam Mattress - Blissful Nights Two-Sided Medium & Gel Memory Foam | 84 H x 72 W 12 D in Wayfair 12SWITCH-CK

    California King Firm 12" Gel/Foam Mattress - Blissful Nights Two-Sided Medium & Gel Memory Foam | 84 H x 72 W 12 D in Wayfair 12SWITCH-CK

    This 2-in-1 mattress allows you to switch the comfort and feel by simply flipping it. Each sleep surface of the mattress was thoughtfully designed with gel memory foam to dissipate heat and allow air to travel throughout for a comfortable night’s... more

    $929.99 $839.99

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    California King 12" Foam Mattress - Alwyn Home Shadybrook Copper 2-Sided Flippable Mattresses in Brown | 84 H x 72 W 12 D Wayfair

    California King 12" Foam Mattress - Alwyn Home Shadybrook Copper 2-Sided Flippable Mattresses in Brown | 84 H x 72 W 12 D Wayfair

    The 12" copper foam flippable mattress is built to last featuring a flippable, two-sided design with copper-ion-infused fabric and copper foam. Just flip and sleep on a refreshed new-mattress-feeling surface. Rest assured the high-density quilted cover... more

    $1,289.99

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    California King Firm 12" Gel/Foam Mattress - Wayfair Sleep™ Gel Memory Foam | 83 H x 71 W 12 D in 4C151848352C4A62B8C7F8F0C6B88C78

    California King Firm 12" Gel/Foam Mattress - Wayfair Sleep™ Gel Memory Foam | 83 H x 71 W 12 D in 4C151848352C4A62B8C7F8F0C6B88C78

    Get responsive and supportive comfort with the 12” 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.... more

    $699.99 $439.99

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    California King Medium 12" Gel/Foam Mattress - Comforpedic From Beautyrest NRGel Memory Foam | 84 H x 72 W 12 D in Wayfair 35602-03582-WF

    California King Medium 12" Gel/Foam Mattress - Comforpedic From Beautyrest NRGel Memory Foam | 84 H x 72 W 12 D in Wayfair 35602-03582-WF

    Surround yourself with luxury with the Comforpedic From Beautyrest 12" Medium NRGel Memory Foam Mattress. Manufactured from next-generation NRGel memory foam that offers a unique combination of conformance and resilience for a deeper, more restorative... more

    $2,919.99 $699.99

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    California King Firm 12" Memory Foam Mattress - Signature Design by Ashley Chime | 79 H x 12 D in Wayfair M72751

    California King Firm 12" Memory Foam Mattress - Signature Design by Ashley Chime | 79 H x 12 D in Wayfair M72751

    When it comes to your comfort, chime in for this Signature Design by Ashley Chime Firm Memory Foam Mattress. Its foam contours to your body delivering amazing support, pressure relief, and comfort. The thick memory foam layer is supported by a super... more

    $647.99 $499.99

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    California King Firm 12" Memory Foam Mattress - Tempur-Pedic TEMPUR-ProAdapt | 84 H x 72 W 12 D in Wayfair 10736180

    California King Firm 12" Memory Foam Mattress - Tempur-Pedic TEMPUR-ProAdapt | 84 H x 72 W 12 D in Wayfair 10736180

    Continuous innovation for continuous comfort. The TEMPUR-ProAdapt® Firm mattress is expertly engineered with the most pressure-relieving material we've ever created and one-of-a-kind cooling technology. It adapts and conforms to your body’s unique... more

    $3,899.00

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    California King Medium 12" Memory Foam Mattress - Sealy to Go 12” in a Box | 84 H x 72 W 12 D Wayfair F03-00086-CK0

    California King Medium 12" Memory Foam Mattress - Sealy to Go 12in a Box | 84 H x 72 W 12 D Wayfair F03-00086-CK0

    Sealy foam mattresses use a combination of advanced foams to deliver custom body-hugging support for every part of your body. The carefully layered foams conform to your shape, distributing your weight evenly to relieve pressure points so you wake up... more

    $1,299.00 $439.99

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    California King Medium 12" Gel/Foam Mattress - Alwyn Home Daya Gel Memory Foam | 84 H x 72 W 12 D in Wayfair 642E9AC8EB0C43CBAF6204AFE4F7E06B

    California King Medium 12" Gel/Foam Mattress - Alwyn Home Daya Gel Memory Foam | 84 H x 72 W 12 D in Wayfair 642E9AC8EB0C43CBAF6204AFE4F7E06B

    This mattress can help alleviate spine discomfort, promote sleep well and make you feel good. Feels so healthy when waking up. it is a product you should choose. Mattress Size: California King | California King Medium 12" Gel/Foam Mattress - Alwyn Home... more

    $899.99

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    California King 12" Gel/Foam Mattress - O By Neven Allume Plush Charcoal Infused Gel Memory Foam | 84 H x 72 W 12 D in Wayfair 10044-OM-12A-CK

    California King 12" Gel/Foam Mattress - O By Neven Allume Plush Charcoal Infused Gel Memory Foam | 84 H x 72 W 12 D in Wayfair 10044-OM-12A-CK

    O by Neven is a modern and affordable mattress built with your sleep needs in mind. If you are looking for the ultimate comfort combined with advanced cooling technology, the Allume from O by Neven mattress is the ideal choice. This 12-inch, 5-layered... more

    $2,188.00 $539.99

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    California King Medium 12" Memory Foam Mattress - Wayfair Sleep™ | 84 H x 72 W 12 D in 3ED3E35F83E54C2DBEE33F00DB5156EC

    California King Medium 12" Memory Foam Mattress - Wayfair Sleep™ | 84 H x 72 W 12 D in 3ED3E35F83E54C2DBEE33F00DB5156EC

    Whether you're settling in for an afternoon nap or drifting off for a good night's rest, this mattress is here to help you get the sleep you need. Crafted from layers of memory foam, it features medium firmness and a breathable design to help keep you... more

    $474.99 $389.99

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    California King 12" Memory Foam Mattress - Leesa Legend Plush | 84 H x 72 W 12 D in Wayfair LELEHY67

    California King 12" Memory Foam Mattress - Leesa Legend Plush | 84 H x 72 W 12 D in Wayfair LELEHY67

    Leesa's Legend mattress is a dual-spring hybrid, featuring two spring units totaling 1, 700+ springs plus extra layers of plush comfort and support foams. Designed for sustainability, the Legend mattress cover is made with a blend of 100% organic... more

    $2,919.92 $2,299.00

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    California King Medium 12" Memory Foam Mattress - Tempur-Pedic TEMPUR ProAdapt | 84 H x 72 W 12 D in Wayfair 10737180

    California King Medium 12" Memory Foam Mattress - Tempur-Pedic TEMPUR ProAdapt | 84 H x 72 W 12 D in Wayfair 10737180

    Continuous innovation for continuous comfort. This product is expertly engineered with the most pressure-relieving material we've ever created and one-of-a-kind cooling technology. It adapts and conforms to your body’s unique needs. Every point of... more

    $3,899.00

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    California King 12" Memory Foam Mattress - Camper Sleep Plush Graphite Infused Travel Bed | 84 H x 72 W 12 D in Wayfair

    California King 12" Memory Foam Mattress - Camper Sleep Plush Graphite Infused Travel Bed | 84 H x 72 W 12 D in Wayfair

    Let us help make your adventure comfortable. Our Mattresses are perfect for Home, RV, Camper, Bunk, Truck Bed, Cabin Sleeper, Homecare Beds, Antique Beds and much more. The 12” Rambler is made up of a 4lb. Carbon Cooling Memory Foam Top Layer,... more

    $1,399.99 $1,219.99

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    California King Medium 12" Memory Foam Mattress - Charcoal infused ComforPedic Loft from Beautyrest | 84 H x 72 W 12 D in Wayfair 35602-07006-WF

    California King Medium 12" Memory Foam Mattress - Charcoal infused ComforPedic Loft from Beautyrest | 84 H x 72 W 12 D in Wayfair 35602-07006-WF

    Comforpedic Loft from Beautyrest mattresses gives you a clean, refreshing feel to your mattress, ensuring that you get the rest you need and the comfort you desire. Manufactured from high-end foams and unique processes, this mattress will be your sleep... more

    $2,998.99 $709.99

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    California King Medium 12" Memory Foam Mattress - Sealy Cool w/ CopperChill Technology in Brown | 84 H x 72 W 12 D Wayfair F03-00129-CK0

    California King Medium 12" Memory Foam Mattress - Sealy Cool w/ CopperChill Technology in Brown | 84 H x 72 W 12 D Wayfair F03-00129-CK0

    Sealy foam mattresses use a combination of advanced foams to deliver custom body-hugging support for every part of your body. Our carefully layered foams conform to your shape, distributing your weight evenly to relieve pressure points so you wake up... more

    $1,299.00 $439.99

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    California King Medium 12" Hybrid Mattress - Tuft & Needle Mint Medium-Plush Mattress, Ceramic | 83.25 H x 72 W 12 D in Wayfair 910810316-8070

    California King Medium 12" Hybrid Mattress - Tuft & Needle Mint Medium-Plush Mattress, Ceramic | 83.25 H x 72 W 12 D in Wayfair 910810316-8070

    Offering the best of both worlds, our mint hybrid mattress combines our contouring foam with individually wrapped springs for softness, support, and a little bit of bounce. It's also designed to help you sleep cool, thanks to black diamond memory foam,... more

    $2,595.00 $1,894.35

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    California King Medium 12.5" Innerspring Mattress - Sealy Posturepedic Mill Park Tight Top & Box Spring Set | 84 H x 72 W 12.5 D in Wayfair

    California King Medium 12.5" Innerspring Mattress - Sealy Posturepedic Mill Park Tight Top & Box Spring Set | 84 H x 72 W 12.5 D in Wayfair

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

    $1,800.00 $1,339.99

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    California King Firm 12" Foam Mattress - Alwyn Home Brooklyn Bedding Medium | 80 H x 72 W 12 D in Wayfair WFSL1031 34396129

    California King Firm 12" Foam Mattress - Alwyn Home Brooklyn Bedding Medium | 80 H x 72 W 12 D in Wayfair WFSL1031 34396129

    Give yourself the perfect stage for a good night's sleep with this mattress. Crafted using individually wrapped pocket coils and a quilted foam topper, this mattress is perfect for giving you the support you need with a medium-firm feel. Plus, it's... more

    $1,099.00 $519.99

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    California King 12" Memory Foam Mattress - Tempur-Pedic TEMPUR ProAdapt Plush | 84 H x 72 W 12 D in Wayfair 10738180

    California King 12" Memory Foam Mattress - Tempur-Pedic TEMPUR ProAdapt Plush | 84 H x 72 W 12 D in Wayfair 10738180

    Continuous innovation for continuous comfort. The Tempur-ProAdapt Soft mattress is expertly engineered with the most pressure-relieving material we've ever created and one-of-a-kind cooling technology. It adapts and conforms to your body’s unique... more

    $3,899.00

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    California King 11" Foam Mattress - Simmons PeacefulSleep Plush | 79.5 H x 83.5 W 11 D in Wayfair 700812690-1070

    California King 11" Foam Mattress - Simmons PeacefulSleep Plush | 79.5 H x 83.5 W 11 D in Wayfair 700812690-1070

    The mattress brings you seriously satisfying sleep at prices that won't break the bank. With a traditional quilted top panel, our innerspring models feature first-rate foams to meet your comfort needs, a base layer for sink-free support, and... more

    $1,038.00 $799.99

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    California King Firm 10.5" Foam Mattress - Simmons PeacefulSleep | 79.5 H x 83.5 W 10.5 D in Wayfair 700812689-1070

    California King Firm 10.5" Foam Mattress - Simmons PeacefulSleep | 79.5 H x 83.5 W 10.5 D in Wayfair 700812689-1070

    The mattress brings you seriously satisfying sleep at prices that won't break the bank. With a traditional quilted top panel, our innerspring models feature first-rate foams to meet your comfort needs, a base layer for sink-free support, and... more

    $1,038.00 $799.99

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    California King Medium 12" Hybrid Mattress - Wayfair Sleep™ Pillow Top | 83 H x 71 W 12 D in ECF270052B1B46F79ECF76935C3977C8

    California King Medium 12" Hybrid Mattress - Wayfair Sleep™ Pillow Top | 83 H x 71 W 12 D in ECF270052B1B46F79ECF76935C3977C8

    Sometimes all you want to do at the end of a long day is flop down in bed and snooze - we get it. That's what this 12" medium hybrid mattress is here to help you do: Crafted with both pocket coils and gel memory foam, it's perfect for giving you the... more

    $899.00 $469.99

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    California King 12" Gel/Foam Mattress - White Noise 12” Gel Memory Foam | 84 H x 72 W 12 D in Wayfair D1EA50F284C6415CBE0ECAEB7EE00DA8

    California King 12" Gel/Foam Mattress - White Noise 12” Gel Memory Foam | 84 H x 72 W 12 D in Wayfair D1EA50F284C6415CBE0ECAEB7EE00DA8

    The 12" Gel Memory Foam Mattress contours to your body for maximum comfort. It forms to your pressure points giving you support where you need it most. The ventilated panels allow for more air flow and offers a cool night's sleep. Mattress Size:... more

    $959.99

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    California King Medium 12" Gel/Foam Mattress - Home Gel Memory Foam | 80 H x 39 W 12 D in Wayfair NV0M801-12-CLK

    California King Medium 12" Gel/Foam Mattress - Home Gel Memory Foam | 80 H x 39 W 12 D in Wayfair NV0M801-12-CLK

    If you are looking for the best foam mattress, you can look at this gel memory foam mattress. Because gel memory foam mattresses are perfect for people who need to decompress, this material is known for slowly adapting to the sleeper’s body, helping to... more

    $509.99 $399.99

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    California King 12" Memory Foam Mattress - Craft & Trade Artistry Hybrid Quantum Edge Coil Spring Mattress, 12 Inch | 84 H x 72 W D in Wayfair

    California King 12" Memory Foam Mattress - Craft & Trade Artistry Hybrid Quantum Edge Coil Spring Mattress, 12 Inch | 84 H x 72 W D in Wayfair

    CRAFT & TRADE - The Art of Better Sleep. The COPPERGEL Cooling Memory Foam Mattress, CRAFT & TRADE, 12 inch Hybrid, California King combines supportive coils with memory foam. Our hybrid mattresses are engineered with some of the industry’s most... more

    $659.99

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    California King 12" Memory Foam Mattress - Benjara 12 Inch Ultra Soft Size Mattress, US Certified | 72 H x 84 W D in Wayfair BM283032

    California King 12" Memory Foam Mattress - Benjara 12 Inch Ultra Soft Size Mattress, US Certified | 72 H x 84 W D in Wayfair BM283032

    Sleep in supreme relaxation with this lusciously beautiful California king mattress. Its US certified high density memory foam gives it a distinctly cozy and relaxing bounce, and it is made in a crisp pure white color for a clean, angelic aesthetic,... more

    $1,239.99 $1,159.99

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    California King Medium 12" Memory Foam Mattress - Red Barrel Studio® Copper Mattress, Breathable, Machine Washable Zip Off Cover System | 84 H x 72 W 12 D in Wayfair

    California King Medium 12" Memory Foam Mattress - Red Barrel Studio® Copper Mattress, Breathable, Machine Washable Zip Off Cover System | 84 H x 72 W 12 D in Wayfair

    Copper is recognized as an essential mineral with health benefits like increased collagen production, energy levels, and iron absorption. The top layer of 2” Copper Memory Foam has antimicrobial properties that neutralize temperatures and dissipate... more

    $1,289.99 $1,199.99

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    California King Medium 12" Memory Foam Mattress - Red Barrel Studio® Copper Mattress, Breathable, Machine Washable Zip Off Cover System | 84 H x 72 W 12 D in Wayfair

    California King Medium 12" Memory Foam Mattress - Red Barrel Studio® Copper Mattress, Breathable, Machine Washable Zip Off Cover System | 84 H x 72 W 12 D in Wayfair

    Copper is recognized as an essential mineral with health benefits like increased collagen production, energy levels, and iron absorption. The top layer of 2” Copper Memory Foam has antimicrobial properties that neutralize temperatures and dissipate... more

    $1,189.99 $1,119.99

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    California King 12" Foam Mattress - Alwyn Home 12 Mattress, Steel | 84 H x 72 W D in Wayfair 7FA7CB9F19354095B21ADFD505B007BF

    California King 12" Foam Mattress - Alwyn Home 12 Mattress, Steel | 84 H x 72 W D in Wayfair 7FA7CB9F19354095B21ADFD505B007BF

    This 12" Medium hybrid mattress is made up of springs, comfort foam, and gel-infused memory foam to create the perfect blend of comfort and support. Gel-infused memory foam helps regulate temperature while relieving pressure point aches. At the same... more

    $999.98 $399.99

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    King 12" Memory Foam Mattress - Craft & Trade Artistry Hybrid Quantum Edge Coil Spring Mattress, 12 Inch | 80 H x 76 W D in Wayfair 00018590

    King 12" Memory Foam Mattress - Craft & Trade Artistry Hybrid Quantum Edge Coil Spring Mattress, 12 Inch | 80 H x 76 W D in Wayfair 00018590

    CRAFT & TRADE - The Art of Better Sleep. The COPPERGEL Cooling Memory Foam Mattress, CRAFT & TRADE, 12 inch Hybrid, California King combines supportive coils with memory foam. Our hybrid mattresses are engineered with some of the industry’s most... more

    $659.99

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    California King Medium 12" Foam Mattress - Alwyn Home Gollapalli Soft-Medium Combined Construction Types Mattress, Latex | 72 H x 84 W 12 D in Wayfair

    California King Medium 12" Foam Mattress - Alwyn Home Gollapalli Soft-Medium Combined Construction Types Mattress, Latex | 72 H x 84 W 12 D in Wayfair

    Introducing the "Pure" 12-inch pocket coil mattress, the epitome of luxurious comfort and advanced support. In a market overflowing with memory foam and latex options, the Pure mattress stands out as a beacon of innovation and distinction. Crafted with... more

    $500.00 $314.99

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    California King 12" Foam Mattress - Alwyn Home Hittle Mattress, Polyester | 84 H x 72 W 12 D in Wayfair 88EAB59207954E0EB99D551B4CD24ABA

    California King 12" Foam Mattress - Alwyn Home Hittle Mattress, Polyester | 84 H x 72 W 12 D in Wayfair 88EAB59207954E0EB99D551B4CD24ABA

    Introducing our ultra-cool mattress that will revolutionize your sleep experience. This mattress combines the cool-touch blend fabric with proprietary BioCool phase change material (PCM) cooling technology integrated into the foam, ensuring you stay... more

    $889.99 $669.99

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    California King Medium 12" Memory Foam Mattress - Red Barrel Studio® Copper Mattress, Breathable, Machine Washable Zip Off Cover System | 84 H x 72 W 12 D in Wayfair

    California King Medium 12" Memory Foam Mattress - Red Barrel Studio® Copper Mattress, Breathable, Machine Washable Zip Off Cover System | 84 H x 72 W 12 D in Wayfair

    Copper is recognized as an essential mineral with health benefits like increased collagen production, energy levels, and iron absorption. The top layer of 2” Copper Memory Foam has antimicrobial properties that neutralize temperatures and dissipate... more

    $1,189.99 $1,119.99

    FREE shipping

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    More information about Mattresses & Boxsprings

    Best prices on Simmons 12 foam mattress in, California King in Mattresses & Boxsprings online. Visit Bizrate to find the best deals on top brands. Read reviews on Home & Garden merchants and buy with confidence.