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    Best Seller
    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 $1,400.00

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    California King 12" Gel/Foam Mattress - Signature Design by Ashley Ultra Plush Gel Memory Foam & Adjustable Base | 83.46 H x 71 W 12 D in Wayfair

    California King 12" Gel/Foam Mattress - Signature Design by Ashley Ultra Plush Gel Memory Foam & Adjustable Base | 83.46 H x 71 W 12 D in Wayfair

    Enjoy endless possibilities for restful sleep with this hybrid innerspring California king mattress and adjustable base set. Feel the support of a truly traditional coil mattress which contours to your body for a comforting feel. High-density foam... more

    $3,180.20 $2,140.00

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    Best Seller
    California King 12" Gel/Foam Mattress - Signature Design by Ashley Ultra Plush Gel Memory Foam & Adjustable Base | 83.46 H x 71 W 12 D in Wayfair

    California King 12" Gel/Foam Mattress - Signature Design by Ashley Ultra Plush Gel Memory Foam & Adjustable Base | 83.46 H x 71 W 12 D in Wayfair

    Enjoy endless possibilities for restful sleep with this hybrid innerspring California king mattress and adjustable base set. Feel the support of a truly traditional coil mattress which contours to your body for a comforting feel. High-density foam... more

    $3,180.20 $2,140.00

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    Signature Design Chime 12 Inch Hybrid California King Mattress in White - Ashley Furniture M69751

    Signature Design Chime 12 Inch Hybrid California King Mattress in White - Ashley Furniture M69751

    "Signature Design Chime 12 Inch Hybrid California King Mattress in White - Ashley Furniture M69751 Enjoy endless possibilities for restful sleep with this hybrid innerspring California king mattress. Pressure point relief is delivered via each of the... more

    $403.69

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    Nivo Contemporary White 12-inch Cal King Innerspring Mattress by Furniture of America

    Nivo Contemporary White 12-inch Cal King Innerspring Mattress by Furniture of America

    This 12-inch Euro pillow top mattress features quilted white damask with inner spring coils for longevity. At a medium soft level, mattress will cradles with the needed support for a great night of sleep. more

    $956.99 $861.29

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    California King 12" Hybrid Mattress - Signature Design by Ashley Chime Ultra Plush | 12 D in Wayfair M69751

    California King 12" Hybrid Mattress - Signature Design by Ashley Chime Ultra Plush | 12 D in Wayfair M69751

    Enjoy endless possibilities for restful sleep with this hybrid innerspring mattress. High-density foam provides the firmness you love. Gel memory foam provides restorative support for your lower back. Hypoallergenic material is ideal for sufferers of... more

    $635.99 $549.99

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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 $559.99

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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 $1,400.00

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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 $1,400.00

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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 $1,039.99

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    California King Extra Firm 12" Innerspring Mattress - Beautyrest Silver BRS900 | 12 D in Wayfair 700810102-1070

    California King Extra Firm 12" Innerspring Mattress - Beautyrest Silver BRS900 | 12 D in Wayfair 700810102-1070

    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 | California King Extra Firm 12" Innerspring Mattress - Beautyrest... more

    $1,682.00 $959.99

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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 $1,039.99

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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 $1,299.99

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    California King 12" Gel Mattress - Wayfair Sleep™ Plush Cooling Hybrid | 75 H x 72 W 12 D in WFSL1041 34538123

    California King 12" Gel Mattress - Wayfair Sleep™ Plush Cooling Hybrid | 75 H x 72 W 12 D in WFSL1041 34538123

    Dreaming of better rest? This 12'' hybrid mattress is here to help you get the sleep you deserve. Combining the best of innerspring and memory foam mattresses, this Wayfair Sleep™ 12" Medium Plush Hybrid Mattress pairs a pocket coil base with layers of... more

    $468.07 $409.99

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    California King Firm 12" Innerspring Mattress - Serta Azure Bay | 84 H x 72 W 12 D in Wayfair 500703511-1070

    California King Firm 12" Innerspring Mattress - Serta Azure Bay | 84 H x 72 W 12 D in Wayfair 500703511-1070

    There is nothing better than waking up after an entire night of supported and comfortable sleep. That's why we've introduced our Azure Bay 12" Innerspring Firm Tight Top mattress to the world! We've added CoolTwist Gel Foam to promote breathable... more

    $1,103.70 $839.99

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    California King 12.75" Innerspring Mattress - Beautyrest BR800 Plush Euro Top | 80 H x 54 W 11 D in Wayfair 700810005-1070

    California King 12.75" Innerspring Mattress - Beautyrest BR800 Plush Euro Top | 80 H x 54 W 11 D in Wayfair 700810005-1070

    Get more from your sleep. This 11" Plush Innerspring Mattress combines their legendary Beauty rest Pocketed Coil Technology, Dual Cool Technology, and Gel Memory foam to help you experience a new level of support, comfort, and temperature management.... more

    $1,240.00 $799.99

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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 700810103-9970

    California King Medium 12" Innerspring Mattress - Beautyrest Silver BRS900 & Box Spring Set | 84 H x 72 W 12 D in Wayfair 700810103-9970

    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. Box Spring Height: Standard Profile (9"), Mattress Size: California King | California King Medium 12"... more

    $2,400.00 $1,400.00

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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 700810102-9870

    California King Extra Firm 12" Innerspring Mattress - Beautyrest Silver BRS900 & Box Spring Set | 80 H x 76 W 12 D in Wayfair 700810102-9870

    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 Extra Firm 12"... more

    $2,295.00 $1,400.00

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    California King Firm 10" Gel/Foam Mattress - Signature Design By Ashley Gel Memory Foam & Adjustable Base | 83 H x 71 W 10 D in Wayfair PKG010145

    California King Firm 10" Gel/Foam Mattress - Signature Design By Ashley Gel Memory Foam & Adjustable Base | 83 H x 71 W 10 D in Wayfair PKG010145

    Top comfort with endless possibilities for restful sleep with this 10-inch innerspring California king pillow top mattress. You'll love the inviting feel of its soft top surface with high-density quilt foam. The firming pad and high-density body foam... more

    $2,460.48 $1,370.00

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    King Firm 10" Gel/Foam Mattress - Signature Design by Ashley Gel Memory Foam & Adjustable Base | 79 H x 75 W 10 D in Wayfair PKG010143

    King Firm 10" Gel/Foam Mattress - Signature Design by Ashley Gel Memory Foam & Adjustable Base | 79 H x 75 W 10 D in Wayfair PKG010143

    Top comfort with endless possibilities for restful sleep with this10-inch California king innerspring pillow top mattress. You'll love the inviting feel of its soft top surface with high-density quilt foam. The firming pad and high-density body foam... more

    $2,685.90 $1,630.00

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    California King Firm 10" Gel/Foam Mattress - Signature Design by Ashley Gel Memory Foam & Adjustable Base | 83 H x 71 W 10 D in Wayfair PKG010146

    California King Firm 10" Gel/Foam Mattress - Signature Design by Ashley Gel Memory Foam & Adjustable Base | 83 H x 71 W 10 D in Wayfair PKG010146

    Top comfort with endless possibilities for restful sleep with this10-inch California king innerspring pillow top mattress. You'll love the inviting feel of its soft top surface with high-density quilt foam. The firming pad and high-density body foam... more

    $2,685.90 $1,540.00

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    King Firm 10" Gel/Foam Mattress - Signature Design By Ashley Gel Memory Foam & Adjustable Base | 79 H x 75 W 10 D in Wayfair PKG010142

    King Firm 10" Gel/Foam Mattress - Signature Design By Ashley Gel Memory Foam & Adjustable Base | 79 H x 75 W 10 D in Wayfair PKG010142

    Top comfort with endless possibilities for restful sleep with this 10-inch innerspring California king pillow top mattress. You'll love the inviting feel of its soft top surface with high-density quilt foam. The firming pad and high-density body foam... more

    $2,460.48 $1,500.00

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    California King Firm 10" Gel/Foam Mattress - Signature Design by Ashley Gel Memory Foam & Adjustable Base | 83 H x 71 W 10 D in Wayfair PKG010147

    California King Firm 10" Gel/Foam Mattress - Signature Design by Ashley Gel Memory Foam & Adjustable Base | 83 H x 71 W 10 D in Wayfair PKG010147

    Top comfort with endless possibilities for restful sleep with this10-inch innerspring pillow top mattress and adjustable base set. You'll love the inviting feel of its soft top surface with high-density quilt foam. The firming pad and high-density body... more

    $3,362.22 $2,000.00

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    California King Firm 10" Gel/Foam Mattress - Signature Design By Ashley Gel Memory Foam & Adjustable Base | 83 H x 71 W 10 D in Wayfair PKG010145

    California King Firm 10" Gel/Foam Mattress - Signature Design By Ashley Gel Memory Foam & Adjustable Base | 83 H x 71 W 10 D in Wayfair PKG010145

    Top comfort with endless possibilities for restful sleep with this 10-inch innerspring California king pillow top mattress. You'll love the inviting feel of its soft top surface with high-density quilt foam. The firming pad and high-density body foam... more

    $2,460.48 $1,370.00

    FREE shipping

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    California King 12" Innerspring Mattress - Beautyrest Silver BRS900 Plush | 80 H x 72 W 12 D in Wayfair 700810104-1070

    California King 12" Innerspring Mattress - Beautyrest Silver BRS900 Plush | 80 H x 72 W 12 D in Wayfair 700810104-1070

    Better you begin with a better night's sleep. The lasting resilience of this mattress ensures you'll be more awake™ every day for years to come. Mattress Size: California King | California King 12" Innerspring Mattress - Beautyrest Silver BRS900 Plush... more

    $1,787.00 $999.99

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    California King Firm 11" Innerspring Mattress - Serta Perfect Sleeper Elkins II | 84 H x 72 W 11 D in Wayfair 500306041-1070

    California King Firm 11" Innerspring Mattress - Serta Perfect Sleeper Elkins II | 84 H x 72 W 11 D in Wayfair 500306041-1070

    This mattress features better pressure point relief than ever before, a custom coil system for contouring support, and a layer of cooling gel foam Mattress Size: California King | California King Firm 11" Innerspring Mattress - Serta Perfect Sleeper... more

    $1,298.70 $839.99

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    California King 12" Foam Mattress - Brooklyn Bedding Plush | 75 H x 39 W 12 D in Wayfair WS12P67-CK

    California King 12" Foam Mattress - Brooklyn Bedding Plush | 75 H x 39 W 12 D in Wayfair WS12P67-CK

    Set the stage for the good night's rest you deserve with this 12" Plush Innerspring Mattress. It offers a plush comfort level through its four layers: two inches of base foam, six inches of individually pocketed coils, three inches of soft premium... more

    $1,099.00 $489.99

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    California King Medium 12" Innerspring Mattress - Beautyrest BR800 | 75 H x 72 W 12 D in Wayfair 700753475-1070

    California King Medium 12" Innerspring Mattress - Beautyrest BR800 | 75 H x 72 W 12 D in Wayfair 700753475-1070

    Get more from your sleep. This 12" Medium Innerspring Mattress combines their legendary Beautyrest Pocketed Coil Technology, DualCool Technology, and Gel Memory foam to help you experience a new level of support, comfort, and temperature management.... more

    $1,147.00 $749.99

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    California King Medium 12" Hybrid Mattress - Signature Design by Ashley Serena Pocketed Mattress, Polyester | 83 H x 75 W 12 D in Wayfair M59051

    California King Medium 12" Hybrid Mattress - Signature Design by Ashley Serena Pocketed Mattress, Polyester | 83 H x 75 W 12 D in Wayfair M59051

    Enjoy endless possibilities for restful sleep with this hybrid innerspring mattress. You get the best of both worlds: the pressure relief of cooling gel-infused memory foam, coupled with body-contouring pocketed coils for superior support. Rest assured... more

    $766.47 $559.99

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    California King 12" Innerspring Mattress - Serta Azure Bay Plush Pillow Top | 81 H x 85 W 12 D in Wayfair 500702013-1070

    California King 12" Innerspring Mattress - Serta Azure Bay Plush Pillow Top | 81 H x 85 W 12 D in Wayfair 500702013-1070

    There is nothing better than waking up after an entire night of supported and comfortable sleep. That's why we've introduced our Serta Azure Bay 12" Innerspring Plush Pillow Top mattress to the world! We've added CoolTwist Gel Foam to promote... more

    $1,233.70 $849.99

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    California King Medium 12" Innerspring Mattress - Sealy Posturepedic Mill Street Tight Top & Box Spring Set | 84 H x 72 W 12 D in Wayfair 42950562

    California King Medium 12" Innerspring Mattress - Sealy Posturepedic Mill Street Tight Top & Box Spring Set | 84 H x 72 W 12 D in Wayfair 42950562

    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... more

    $1,600.00 $1,339.99

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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 700810104-9970

    California King 12" Innerspring Mattress - Beautyrest Silver BRS900 Plush & Box Spring Set | 75 H x 72 W 12 D in Wayfair 700810104-9970

    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 12"... more

    $2,400.00 $1,400.00

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    California King Medium 13.75" Innerspring Mattress - Beautyrest BR800 Pillow Top | 14 D in Wayfair 700753480-1070

    California King Medium 13.75" Innerspring Mattress - Beautyrest BR800 Pillow Top | 14 D in Wayfair 700753480-1070

    Experience energizing sleep! This mattress combines the best of both worlds with the Beautyrest pocketed coil technology with air-cool gel memory foam to deliver the support your body needs and the comfort you want. Mattress Size: California King |... more

    $1,451.00 $919.99

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    California King 11" Innerspring Mattress - Serta Perfect Sleeper Elkins Plush | 11 D in Wayfair 500303646-1070

    California King 11" Innerspring Mattress - Serta Perfect Sleeper Elkins Plush | 11 D in Wayfair 500303646-1070

    This mattress features better pressure point relief than ever before, a custom coil system for contouring support, and a layer of cooling gel foam. Mattress Size: California King | California King 11" Innerspring Mattress - Serta Perfect Sleeper Elkins... more

    $1,428.70 $889.99

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    California King Firm 10" Hybrid Mattress - Sleep Innovations Marley Medium | 80 H x 38 W 10 D in Wayfair 3073007

    California King Firm 10" Hybrid Mattress - Sleep Innovations Marley Medium | 80 H x 38 W 10 D in Wayfair 3073007

    Sleep soundly and supported on our 10-inch, four-layer memory foam and innerspring Marley Hybrid Mattress. The combination of an innerspring coil system and cooling gel memory foam provides a balance of support and comfort. A cool-touch cover relaxes... more

    $499.99

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    California King Firm 10" Innerspring Mattress - Sealy Essentials Osage Tight Top & Box Spring Set | 84 H x 72 W 10 D in Wayfair 42875662

    California King Firm 10" Innerspring Mattress - Sealy Essentials Osage Tight Top & Box Spring Set | 84 H x 72 W 10 D in Wayfair 42875662

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

    $1,429.00 $1,199.99

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    California King Firm 10" Innerspring Mattress - Sealy Essentials Osage Tight Top | 84 H x 72 W 10 D in Wayfair 52875762

    California King Firm 10" Innerspring Mattress - Sealy Essentials Osage Tight Top | 84 H x 72 W 10 D in Wayfair 52875762

    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:... more

    $1,129.00 $869.99

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    More information about Mattresses & Boxsprings

    Best prices on 12 inches king size gel, Innerspring, 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.