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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 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

    $889.99

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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 12” in 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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    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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    California King Medium 12" Hybrid Mattress - Tempur-Pedic Tempur ProAdapt® | 84 H x 72 W 12 D in Wayfair 10739180

    California King Medium 12" Hybrid Mattress - Tempur-Pedic Tempur ProAdapt® | 84 H x 72 W 12 D in Wayfair 10739180

    Continuous innovation for continuous comfort. The TEMPUR-ProAdapt® Hybrid mattress is expertly engineered with the most pressure-relieving material we've ever created, specially designed coils, and one-of-a-kind cooling technology. It adapts, conforms,... more

    $3,899.00

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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 Medium 12" Hybrid Mattress - Avenco | 84 H x 73 W 12 D in Wayfair AC-O1SM30CLKF-HK

    California King Medium 12" Hybrid Mattress - Avenco | 84 H x 73 W 12 D in Wayfair AC-O1SM30CLKF-HK

    Relax and enjoy luxurious comfort and inspiring support on the Avenco 12" medium Hybrid Mattress, designed for those who expect more and appreciate life's luxuries. That's why we've created a high-end mattress that rivals any top choice in every way... more

    $509.99 $369.99

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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 12.5" 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 $1,399.99

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    California King Medium 12" Hybrid Mattress - Tempur-Pedic ProBreeze® | 84 H x 72 W 12 D in Wayfair 10242262

    California King Medium 12" Hybrid Mattress - Tempur-Pedic ProBreeze® | 84 H x 72 W 12 D in Wayfair 10242262

    Experience has proven, all-night cooling with the all-new Tempur-probreeze® mattress. Featuring specialized cool-to-the-touch covers that work with our exclusive pure cool® material to help pull heat away from your body so you stay cooler -all night... more

    $5,299.00 $4,999.00

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    California King Firm 12" Innerspring Mattress - Kingsdown Prime Owington Cushion | 84 H x 72 W 12 D in Wayfair FG-36001-TT1-CKH

    California King Firm 12" Innerspring Mattress - Kingsdown Prime Owington Cushion | 84 H x 72 W 12 D in Wayfair FG-36001-TT1-CKH

    The Prime collection provides luxury sleep at an exceptional value. Featuring consistent, edge-to-edge support, the Prime Owington Cushion Firm features additional layers of comfort added just beneath the luxury cooling cover. The Cushion Firm medium... more

    $1,453.00 $1,242.00

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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 Medium 12" Hybrid Mattress - Brooklyn Bedding Standard w/ Cooling Cover | 80 H x 72 W 12 D in Wayfair BBM1267M

    California King Medium 12" Hybrid Mattress - Brooklyn Bedding Standard w/ Cooling Cover | 80 H x 72 W 12 D in Wayfair BBM1267M

    The Brooklyn Bedding Standard 12" medium, cooling, hybrid mattress provides a well-supported night's sleep without compromising comfort. This Brooklyn Bedding Standard 12" medium, cooling, hybrid mattress maximizes comfort and support through its... more

    $649.99 $589.99

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    California King 12" Innerspring Mattress - Sealy Soft Tight Top & Box Spring Set | 84 H x 72 W 12 D in Wayfair 42951262

    California King 12" Innerspring Mattress - Sealy Soft Tight Top & Box Spring Set | 84 H x 72 W 12 D in Wayfair 42951262

    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. Soft feel. Mattress... more

    $1,720.00 $1,339.99

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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 $499.99

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    King 12" Mattress - Arsuite Erik Plush Pillow Top | 84 H x 72 W 12 D in Wayfair 9F119D3607334F6E8846C047C7A0D4EB

    King 12" Mattress - Arsuite Erik Plush Pillow Top | 84 H x 72 W 12 D in Wayfair 9F119D3607334F6E8846C047C7A0D4EB

    Sleep like a baby on the Silver California king-size mattress and wake up to a new day feeling relaxed and rejuvenated. Specifications: Case: 1Pc/1Ctn/40'/75LbsSize: 84" x 72" x 12"HFinish: 12" Pillow TopMaterials: Mattress | King 12" Mattress -... more

    $1,289.99 $1,179.99

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    California King Firm 12" Innerspring Mattress - Sealy Posturepedic Mill Road Tight Top & Box Spring Set | 84 H x 72 W 12 D in Wayfair 42950862

    California King Firm 12" Innerspring Mattress - Sealy Posturepedic Mill Road Tight Top & Box Spring Set | 84 H x 72 W 12 D in Wayfair 42950862

    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. Mattress... more

    $1,720.00 $1,369.99

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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

    $3,139.99 $2,299.00

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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 12" Innerspring Mattress - Beautyrest Silver BRS900 Plush & Box Spring Set | 75 H x 72 W 12 D in Wayfair 700810104-9870

    California King 12" Innerspring Mattress - Beautyrest Silver BRS900 Plush & Box Spring Set | 75 H x 72 W 12 D in Wayfair 700810104-9870

    Better you begin with a better night's sleep. The lasting resilience of Beautyrest silver ensures you'll be more awake™ every day for years to come. Box Spring Height: Low Profile (5"), Mattress Size: California King | California King 12" Innerspring... more

    $2,400.00 $1,140.00

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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 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 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 $464.99

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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 - 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 12.5" Innerspring Mattress - Sealy Posturepedic Mill Park Tight Top | 84 H x 72 W 12.5 D in Wayfair 52952562

    California King Medium 12.5" Innerspring Mattress - Sealy Posturepedic Mill Park Tight Top | 84 H x 72 W 12.5 D in Wayfair 52952562

    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

    $1,500.00 $1,129.99

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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 Medium 12" Innerspring Mattress - Beautyrest Silver BRS900 | 84 H x 53 W 12 D in Wayfair 700810103-1070

    California King Medium 12" Innerspring Mattress - Beautyrest Silver BRS900 | 84 H x 53 W 12 D in Wayfair 700810103-1070

    Better you begin with a better night's sleep. The lasting resilience of Beauty rest silver ensures you'll be more awake™ every day for years to come. Mattress Size: California King | California King Medium 12" Innerspring Mattress - Beautyrest Silver... more

    $1,787.00 $799.99

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    California King Medium 12" Innerspring Mattress - Sealy Posturepedic Mill Street Tight Top | 84 H x 72 W 12 D in Wayfair 52950562

    California King Medium 12" Innerspring Mattress - Sealy Posturepedic Mill Street Tight Top | 84 H x 72 W 12 D in Wayfair 52950562

    Featuring trusted Sealy quality with targeted back and core support, a reinforced edge for increased durability, and an antibacterial soft knit cover that wicks away moisture and keeps the mattress protected. Medium Feel. Mattress Size: California King... more

    $1,300.00 $999.99

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    California King Extra Firm 12" Innerspring Mattress - Sealy Posturepedic Plus firm | 84 H x 72 W 12 D in Wayfair 52728362

    California King Extra Firm 12" Innerspring Mattress - Sealy Posturepedic Plus firm | 84 H x 72 W 12 D in Wayfair 52728362

    We believe a better quality mattress leads to better quality sleep and a better quality of life. This ultra-firm, cooling mattress delivers a breakthrough in pressure-relieving comfort. Sleep better on this mattress. Mattress Size: California King |... more

    $1,899.00 $1,179.99

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

    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

    $1,575.00 $699.99

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    California King Medium 12" Latex Mattress - PlushBeds Luxury Bliss | 80 H x 38 W 12 D in Wayfair LUXBLM1207

    California King Medium 12" Latex Mattress - PlushBeds Luxury Bliss | 80 H x 38 W 12 D in Wayfair LUXBLM1207

    Our Luxury Organic Hybrid Latex Mattress brings comfort back to bed. Made with certified organic and sustainable materials, including 100% natural latex, GOTS-certified organic wool and cotton, and premium fabric-encased coils as a supportive core. Up... more

    $3,499.00 $2,299.00

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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 Medium 12" Hybrid Mattress - Sleep Inc. Solutions | 83 H x 71 W 12 D in Wayfair S70512E-1070

    California King Medium 12" Hybrid Mattress - Sleep Inc. Solutions | 83 H x 71 W 12 D in Wayfair S70512E-1070

    Get total comfort at a cozy price with the Sleep Inc. Sleep Solutions 12" Hybrid Mattress. Sleep Inc. hybrid mattresses combine cradling cool gel memory foam with traditional innerspring to give you the support you are used to with the pressure relief... more

    $990.00 $469.99

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    California King Medium 12" Hybrid Mattress - Sealy Cool w/ CopperChill Technology in Brown | 84 H x 72 W 12 D Wayfair F03-00131-CK0

    California King Medium 12" Hybrid Mattress - Sealy Cool w/ CopperChill Technology in Brown | 84 H x 72 W 12 D Wayfair F03-00131-CK0

    Sealy was among the first to create the hybrid, pairing the best qualities of innerspring and memory foam mattresses to deliver best-of-both-worlds comfort. Carefully engineered coils adapt and support every part of your body, while specialty foams... more

    $1,199.00 $519.99

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    California King Firm 12" Innerspring Mattress - Kingsdown Prime Owington | 84 H x 72 W 12 D in Wayfair FG-36000-TT1-CKH

    California King Firm 12" Innerspring Mattress - Kingsdown Prime Owington | 84 H x 72 W 12 D in Wayfair FG-36000-TT1-CKH

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

    $1,483.00 $1,242.00

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    California King Extra Firm 12" Innerspring Mattress - Beautyrest Silver BRS900 & Box Spring Set | 80 H x 76 W 12 D in Wayfair 700810102-9970

    California King Extra Firm 12" Innerspring Mattress - Beautyrest Silver BRS900 & Box Spring Set | 80 H x 76 W 12 D in Wayfair 700810102-9970

    Better you begin with a better night's sleep. The lasting resilience of Beautyrest silver ensures you'll be more awake™ every day for years to come. Mattress Size: California King, Box Spring Height: Standard Profile (9") | California King Extra Firm... more

    $2,295.00 $1,200.00

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    California King Medium 12" Innerspring Mattress - Beautyrest Silver BRS900 & Box Spring Set | 84 H x 72 W 12 D in Wayfair 700810103-9870

    California King Medium 12" Innerspring Mattress - Beautyrest Silver BRS900 & Box Spring Set | 84 H x 72 W 12 D in Wayfair 700810103-9870

    Better you begin with a better night's sleep. The lasting resilience of Beautyrest silver ensures you'll be more awake™ every day for years to come. Box Spring Height: Low Profile (5"), Mattress Size: California King | California King Medium 12"... more

    $2,400.00 $1,090.00

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    California King Firm 12" Mattress - White Noise 12-inch Zoned Reactive w/ Zipper, Medium Firm, Breathable, Machine Washable | 84 H x 72 W 12 D in Wayfair

    California King Firm 12" Mattress - White Noise 12-inch Zoned Reactive w/ Zipper, Medium Firm, Breathable, Machine Washable | 84 H x 72 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

    $1,179.99

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    More information about Mattresses & Boxsprings

    Best prices on Aura 12 inch x 12, 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.