Christopher Knight Cool Tencel 11-inch Full-size Gel Memory Foam Mattress

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ITEM# 15417397
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ITEM#: 15417397

Green Tea helps to reduce odors, charcoal helps to draw heat in and whisk moisture away. Bio Foam is the process in which natural seed oils are used instead of harmful chemicals
  • First Layer: 0.5 inch of cool gel-infused memory foam
  • Second Layer: 1.5 inches breathable pressure relief memory foam
  • 3rd Layer: 2 inches advanced spinal support poly foam layer
  • Base Layer: 7 inches high-density reflex base foam
  • Bottom Cover: Non-slip fabric
  • Cover: Poly Jacquard with Aloe Vera

  • Size: Full
  • Green Tea helps to reduce odors
  • Zippered cover for easy professional cleaning
  • Density: 3 pounds in top layer
  • Warranty: 20 year Manufacturer's warranty
  • Dimensions: 54 inches wide x 75 inches long x 11 inches tall
  • Memory foam is resistant to dust mites and is naturally antimicrobial
  • Temperature sensitive foam adjusts to your body temperature so you stay warm
  • Improves circulation while reducing pressure points
  • Eliminates motion transfer and uncomfortable pressure points
  • Never needs turning
  • Disperses your weight evenly
  • Great for platform beds and slatted frames
  • Meets all flammability standards

Memory Foam Tips:
  • Remove from packaging within 72 hours of receipt to maximize memory foam expansion.
  • This product arrives very tightly packed. Unwrap and allow 48 hours for this product to return to its original shape.
  • Being sealed in plastic packaging sometimes traps odors. After unwrapping, allow product to air for a few hours.
  • 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.


Finish Charcoal  , Green  , Natural  
Mattress Type Foam, Gel Memory Foam, Memory Foam
Thickness 11 Inch, 4 Inch, 5 Inch, 7 Inch
Mattress Top Plush Top
Mattress Support Medium
Product Features Antimicrobial, Bed in a Box
Recommended Foundation Type Bed Slats, Box Spring, Platform
Dimensions See Details
Warranty 20 year Limited Manufacturer
Model Number OST5511-F
Country of Origin China

Product Reviews

5 Stars
4 Stars
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1 Stars
  • Most Recent

  • Great bed.
    Verified Purchase

    I bought it for my daughter and I have slept on it a couple of's very comfy I love it!

    Read More
    livp Jun 3, 2016
  • Amazing
    Verified Purchase

    This memory foam mattress is made for a box spring AND bed frame. I used it with only a box spring and it was very firm. The moment you put a bed frame underneath, it makes a world of a difference and it feels absolutely amazing. I tend to sleep hot, regardless of the type of mattress I lay on. This mattress makes my nights no more hotter, nor less cooler. There's no downside to that statement, just a fact.

    Read More
    antinoitikos Feb 12, 2014
  • Too firm
    Verified Purchase

    Yes, would refer to a friend if they liked a very firm bed. No problem with odor and it took shape in 24 hours. I've had it for a few weeks now and it's only gotten to 9 1/2 ", but since it was too firm for me, I put my 4" foam topper on it and it's just fine now.

    Read More
    elprobert Oct 22, 2013
  • Great Matress with NO ODOR
    Verified Purchase

    After weeks of research and reading numerous amount of feedbacks I boughts this matress. I LOVE it! Great price and quality! You can't find one in local stores for such price believe me. Quality like this would cost you a couple of thousands. Matress very firm but not too hard and not too soft, just right I would say. It came in big tall box, very fast shipping. When we opened it it rised up infront the eyes and next day it was good to go. Another BIG PLUS for that matress - it has NO ODOR at all! I also bought spring box to put under it and it feels and looks very good together. After recieve this matress I ordered another one for other room and love it too. I definitely would recommend it!

    Read More
    klavdia Oct 17, 2013
  • Super Comfy
    Verified Purchase

    This mattress is a definite value for those who want memory foam at an affordable price.

    Read More
    grammachris Oct 12, 2013

Questions & Answers

  • Q:

    "Do you also sell the bed in this picture? I would be interested in buying the bed, not the mattress."

    • A:

      Hello, anny333. We do not have any information on the bed in the photo. However, items 13821539 and 15668718 are close matches. You may also like items 15513891 and 14430375. Thank you for shopping with us, and have a great day.

  • Q:

    "Does anyone know how well this does on a box spring?"

    • A:

      Thank you for your inquiry, we can appreciate the fact you want a firsthand account of the product. We will leave the question on the site so that others may respond to your question. You will receive an email notification every time you get a response.

Shopping Tips & Inspiration

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.
Standard shipping details
Expedited shipping details

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.
More Details


This item cannot be shipped to Alaska or Hawaii. More details

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.