Orthopedic 12-inch King-size 4-layer Memory Foam / Latex Mattress

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ITEM# 12947871
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ITEM#: 12947871

Sleep better with this king size memory foam mattress. The orthopedic mattress includes a Duralux latex support layer and a memory foam sleep surface. Developed for NASA, the foam helps relieve pressure points that cause tossing and turning. Naturally antimicrobial, the foam also resists dust mites. The machine-washable cotton cover fits snugly over the mattress and features unique breathing, absorption and moisture-wicking properties.

  • Measures 12 inches thick
  • Density: 1.5-inch, 4-pound open cell sleep-surface memory foam, 1-inch layer of ventilated Duralux latex, 3.5-inch high-density support layer, 6-inch convoluted high-density HR base foam
  • Dimensions: 12 inches high x 76 inches wide x 80 inches long
  • Machine washable cotton cover has a unique stretch and recovery with maximum breathing, absorption and moisture-wicking properties
  • Memory foam is resistant to dust mites and is naturally antimicrobial
  • Originally designed for NASA, this space age foam cradles your body, reducing pressure points that cause tossing and turning
  • Open cell sleep surface allows you to sleep cooler than other memory foam mattresses
  • Improves circulation
  • Eliminates motion transfer
  • Never needs turning
  • Disperses your weight evenly
  • Can be used with existing box spring or platform bed
  • Does not include foundation

Memory Foam Tips:
  • Remove from packaging within 72 hours to maximize memory foam expansion.
  • Product arrives tightly packed. Unwrap and allow 48 hours for product to return to original shape.
  • Being sealed in plastic packaging sometimes traps odors. After unwrapping, allow to air for a few hours.
  • There may be slight variances in the dimensions.

Please be advised that even similar products may produce different firmness results.

Once opened this product is non-returnable.


Mattress Type Latex, Mattress Only, Memory Foam
Thickness 12 Inch
Memory Foam Type Foam, Latex, Memory Foam
Mattress Top Specialty
Mattress Support Medium
Product Features Antimicrobial, Bed in a Box, Orthopedic
Recommended Foundation Type Bed Slats, Box Spring, Platform
Useful Link Mattresses and Memory Foam
Dimensions 80 x 76 x 12
Model Number OCLMF12KG
Country of Origin United States

Customer Reviews

5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
  • Most Recent

  • Sooo comfortable
    Verified Purchase

    This user earned $2.00 in rewards for writing this review.Learn More

    Super comfy, very pleased with this purchase. Its amazing how small it was and then poofed up after being removed from.the shipping material.

    Read More
    tamalicioustoo Sep 11, 2017
  • 5 years
    Verified Purchase

    This user earned $2.00 in rewards for writing this review.Learn More

    Had this mattress for 5 years. It slept great during that time. The last couple of month it started to really "taco" in the middle. Unfortunately at that point it was no longer offering the support me girlfriend and I needed. It was my first memory foam mattress. I will never go back to spring mattresses

    Read More
    Steven H. Jul 26, 2017
  • Very Comfortable
    Verified Purchase

    This user earned $1.00 in rewards for writing this review.Learn More

    We have had this mattress for 5 years and continue to be pleased with it. We do rotate it directionally every few months- start to feel your sleeping divot otherwise. But other than that, it has been great.

    Read More
    Jamie S. Jun 23, 2017
  • Definitely not 12 inches
    Verified Purchase

    More like a mattress topper. Not a mattress. Very disappointed.

    Read More
    brenda r. Mar 31, 2017
  • Love our bed
    Verified Purchase

    We looked locally and couldn't find anything we loved at a reasonable price. Then we found this bed and it is amazing. We are ordering a second one for our spare room because we love it so much. It arrived quickly and unpacked perfectly. It really is amazing .....

    Read More
    Michelle J. May 4, 2016
  • Most Helpful

  • Excellent
    Verified Purchase

    I have had it about 1 year and wanted to see how it held up before commenting on it. This bed is awsome!!! Yes, it is firm, but it is supposed to be. It will relax under your warmth and it will slightly soften after multiple uses. However, it will not soften as to cause any problems to comfort. It holds up true to as to the company's statement of purpose. Smell was not bad at all and after a day it was useable. We do get warm, but nothing that throwing the cover off your leg can't solve. To me it is not much different than the warmth of a regular bed. It turned out much better than I expected. We love it!!!

    Read More
    ansleyhillhybrids Oct 21, 2011
  • mattress
    Verified Purchase

    This mattress is heavenly. And there is no heat factor with the latex top. Was shipped quickly and on time. Absolutely no complaints.

    Read More
    marianne17 Sep 25, 2010
  • Sleeping well is a good thing...
    Verified Purchase

    I am very happy with this bed so far (about 3 weeks). The support is great when I sleep on my back or my side, and I haven't had the backache when I get up in the morning as I did with my traditional mattress. I love it!

    Read More
    shawnstep Apr 20, 2011
  • I love my mattress!
    Verified Purchase

    I received the mattress a month ago and so far, so great! It was heavy to move upstairs by myself, but possible, and after it was out of the package it inflated to the right height in 1 hour. There was a bit of a chemical smell for the first night but it went away completely after some airing. It is very comfortable to sleep in and tossing and turning is literally over. It is firm, but not too firm, just perfect! But if you prefer a soft to medium hardness mattress, this is not for you. It does not feel warm, like many other foam mattress and fits perfectly on my King bed frame. Also it goes back to its original shape right away so there's no sagging. I absolutely love it and would recommend to anyone with back, hips and shoulder problems and, of course, anyone looking for a better sleep!

    Read More
    MDLiz Feb 10, 2011
  • fair
    Verified Purchase

    Bed is great when you first get in, but by morning you have sunk in and can't hardly turn over.

    Read More
    rdcope Feb 27, 2011

Questions & Answers

  • Q:

    "Hi I am interested on this product, but is it sprayed with any factory chemicals (flame retardants, anti mold, stain resistant synthetics)...? Kindly advise. Thanks"

    • A:

      This item is not treated with additional chemicals.

  • Q:

    "why if the latex not put on the top layer, so it would be more comfortable instead of the considerd "hot layer" on top?"

    • A:

      Hello bren62752, unfortunately, we are not able to customize this mattress. Thanks for shopping with us!

  • Q:

    "Please. What's the name of the company that makes this mattress?"

    • A:

      Hello k, we are unable to disclose the manufacturer of some of our products; however, Overstock.com stands behind every product we sell. When necessary we can contact suppliers if a product issue arises. Thank you for shopping with us.

  • Q:

    "Why did you choose this product?"

    • A:

      The reviews were good and I am looking for a first class mattress at a reasonable price

  • Q:

    "Is this sprayed with any factory chemicals (flame retardants, anti mold, stain resistant synthetics, etc???"

    • A:

      No, the glue that is used to adhere the layers together is water based and meets the stringent OkoTex standards. Thank you.

  • Q:

    "What pound/denisty rating is the 3.5-inch high-density support layer?"

    • A:

      The 3.5-inch polyurethane support layer has a density rating of 1.8.

  • Q:

    "Will this mattress work with an adjustable bed frame?"

    • A:

      In order to use an adjustable bed frame, you would have to use a box spring. This type of mattress is designed for a platform bed.

  • Q:

    "what is the manufacturer warranty?"

    • A:

      This product comes with a 90-day manufacturer warranty.

  • Q:

    "Where is this bed manufactured?"

    • A:

      What I mean is if it is assembled in the US or if all or most of it's parts are manufactured in the US.

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Shipping & Returns

Contact Information
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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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. More details

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