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Sleep Sync 12-inch Cal King-size Memory Foam Mattress

Overall Rating Rating 4  |  4 reviews  |  Write a review
Sale $422.99
$670.00 (61%) off
MSRP: $1,092.99
Item #: 14369190
Moderate Sellout Risk
    Give yourself a good night's rest on this comfortable king-size memory foam from Sleep Sync. This 12-inch mattress works to improve circulation while reducing pressure points that can often disrupt your sleep. It is made of 100 percent rayon....more

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Sponsored Links What's This?
    Sleep well and comfortably with this 12-inch memory foam mattress from Sleep Sync. This mattress improves circulation while reducing pressure points that can disrupt your sleep.

    • 12 inches
    • Medium Firm
    • 3.0 pound memory foam, 1.8 pound convoluted foam, 1.8 pound foam spring support base
    • 72 inches wide x 84 inches long x 12 inches thick
    • Pressure sensitive memory foam molds to your body to provide increased circulation and gentle support.
    • Improves circulation while reducing pressure points that can disrupt your sleep
    • Mattress eliminates motion transfer and uncomfortable pressure points
    • Never needs turning
    • Disperses your weight evenly
    • Mattress can be used with an existing frame
    • Great for platform beds and slatted frames
    • Meets all flammability standards
    • 100-percent rayon fabric from bamboo fibers

    Memory Foam Tips:
    • To maximize memory foam expansion; remove from packaging within 72 hours of receipt.
    • This product arrives very tightly packed. Please unwrap and allow 48 hours for this product to return to its original shape.
    • Being sealed in plastic packaging sometimes traps odors. A few hours of airing usually removes the odor.
    • Due to machine cutting manufacturing processes, there may be slight variances in the dimensions of this product.

    Due to the nature of Memory Foam the firmness level of every item is unique. Please be advised that even similar products may produce different firmness results

    Once opened this product is non-returnable.
See description
20 year Limited Manufacturer
See description
Model No:
Brand: Sleep Sync


  • Mattress Type
    Memory Foam
  • Thickness
    12 Inch
  • Memory Foam Type
    Foam, Memory Foam
  • Density
    3 Pound
  • Support
    Firm, Medium
  • Mattress Top
  • Product Features
  • Recommended Foundation Type
    Bed Slats, Box Spring, Platform
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Showing 2 most helpful reviews on this product.

  • 5 Stars 3
  • 4 Stars 0
  • 3 Stars 0
  • 2 Stars 0
  • 1 Stars 1
  • 12" cal king

    Great quality mattress for the price! Purchased to replace a waterbed mattress in a hard frame. Fit perfect with enough depth so you don't hit your legs on frame. A bit more firm than expected, but I am still getting used to it. Very comfortable. Would recommend.

  • Awesome bargain, price and comfort!

    Very pleased with my purchase, at first a little apprehensive of course but couldn't beat the value in comparison to my mother in law's. (She paid $900 for her queen size vs our cal king!)

    • How did the color on site compare with the actual product? exactly as pictured
    • Please tell us about the quality of the product. great quality
    • How accurate was the on site description of the product? very accurate
View All Most Helpful Reviews
  • Love this mattress!

    My husband and I are both heavy people and worried the firmness wouldn't be enough. Boy were we wrong! Love the mattress!!!! You only sink in a little and it popped out and air out to a full 12" within the first 24 hrs. Totally recommend this item.


    Leah H. Mar 24, 2015

  • Defective

    I believe my product is defective. Immediately unwrapped this product as directed by instructions. It's been a few days and we have not yet slept on it but it has yet to reach 12 inches in height. There are also peaks and valleys in this mattress. I just touched the top of it to put a sheet on and noticed that it is not completely flat and even. Wish I didn't purchase it cause now we are stuck with a nearly 8 inch, lumpy mattress!!


    Denise H. Mar 1, 2015

View All Most Recent Reviews

Product Q&A

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How thick is the memory foam layer? danielwill on Dec 25, 2012
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Second layer density: 1 inch of 1.8 pound convoluted memory foam. overstockcustomercare1 on Dec 26, 2012

Is the entire mattress flexible in that in an bent slightly to get up tight, angular staircases? chasehorn on Sep 16, 2012
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Yes, this is flexible enough to bend. overstockcustomercare1 on Sep 16, 2012
This is foam and will bend. overstockcustomercare1 on Sep 17, 2012

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Usually leaves our warehouse in 1-2 business days. *

Mattress Return Policy:

Mattress Sets are non-returnable upon signature at delivery. Mattresses are non-returnable if opened or taken out of their plastic wrapping.
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This item cannot be shipped to Alaska or Hawaii.
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Shipping Information:

Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
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* For your protection, all orders are screened for security purposes. If your order is selected for review, our Loss Prevention Team may contact you by phone or email. There may be a two business day delay to process your order.

** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.

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