Christopher Knight Home 4-inch Dual-layer King-size Gel Memory Foam Mattress Topper

by Christopher Knight Home
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ITEM# 16910995
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ITEM#: 16910995

Get a good night's sleep with this memory foam mattress topper by Christopher Knight Home. Crafted with 4-inches of soft foam, this supportive mattress topper reduces pressure points and regulates body temperature.

  • Size: King
  • Includes: One (1) mattress topper
  • CertiPUR-US compliant
  • Top Layer: 2 inches of 3 pound High Density Silica gel-infused memory foam
  • Bottom Layer: 2 inches of 1.5 pound Base Reflex poly-urethane foam
  • Measures 4 inches thick
  • Density: 3 pound
  • Cover: Soft knitted polyester
  • Cover care instructions: Machine washable
  • Dimensions: 4 inches high x 76 inches wide x 80 inches long
  • 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
  • Temperature sensitive foam adjusts to your body temperature so you stay warm
  • Improves circulation while reducing pressure points
  • Mattress eliminates motion transfer and uncomfortable pressure points
  • Disperses your weight evenly
  • 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.

Once opened this product is not returnable

Click here to view mattress topper buying guide.


Type Mattress Topper
Thickness 4 Inch
Memory Foam Type Gel Memory Foam
Density 3 Pound
Firmness Firm
Care Instruction Machine Wash
Product Features Antimicrobial, Eco-Friendly, Hypoallergenic
Dimensions See Details
Warranty 90 day Manufacturer
Model Number G400KT
Country of Origin China
  • Most Recent

  • Not even close to the advertised 4"
    Verified Purchase

    This should be called the 2-inch mattress topper. It is not the 4 inches advertised or even close to it. The packaging is very difficult to deal with and it has a very strong, chemical smell upon arrival. Would advise buyers to stay away from this product.

    Read More
  • Buyer
    Verified Purchase

    I didn't like it at all and gave it away.

    Read More

Questions & Answers

  • Q:

    "Why did you choose this product?"

    • A:


  • Q:

    "Can you give me the measurements width and length on this want to see if it will fit my travel trailer bed"

    • A:

      Dimensions: 4 inches high x 76 inches wide x 80 inches long.

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

Standard Return Policy:

Items must be returned in new or unused condition and contain all original materials included with the shipment. For the return policy on a Marketplace item, please refer to the Seller’s individual policy, located on the product page by clicking on the Seller name. More Details

FINAL SALE EXCLUSION: Items marked as FINAL SALE are not returnable unless the problem you experience is the result of our error.


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.