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

by Christopher Knight Home
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ITEM# 16911010
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ITEM#: 16911010

Get your best night's sleep yet with this ultra-supportive Christopher Knight Home mattress topper. Made from two different layers, a high-density silica gel-infused memory foam top layer and a Base Reflex polyurethane foam bottom layer, it provides a full four inches of support for the ultimate in luxurious comfort. Sleep in bliss with the NASA-inspired design, which allows pressure points to relax while simultaneously improving your circulation. The soft and velvety knitted polyester cover is machine washable to make spring cleaning a breeze.

Protect your home and loved ones against mites and mildew with the naturally antimicrobial properties of the memory foam layer. Each mattress topper is CertiPUR-US compliant and meets all fire regulations.

  • Includes one mattress topper that is Certi-PUR-US compliant
  • Made from a 2" top layer of three-pound high density silica gel-infused memory foam and a 2" bottom layer of 1.5-pound Base Reflex polyurethane foam, providing 4" of comfortable support
  • Soft knitted polyester cover is machine washable for convenience
  • Memory foam is antimicrobial and protects against dust mites
  • NASA-quality foam cradles your body while eliminating uncomfortable pressure points and motion transfer to ensure less tossing and turning
  • Improves circulation and disperses your weight evenly
  • Controls your body temperature with temperature-sensitive foam to keep you cool
  • Meets all flammability standards to provide a safe product
  • Twin measures 36" W x 74" L
  • Full measures 54" W x 74" L
  • Queen measures 60" W x 80" L
  • King measures 76" W x 80" L


  • Twin: 4 inches high x 36 inches wide x 74 inches long
  • Full: 4 inches high x 54 inches wide x 74 inches long
  • Queen: 4 inches high x 60 inches wide x 80 inches long
  • King: Dimensions: 4 inches high x 76 inches wide x 80 inches long

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 Flat Topper, Mattress Pad, Mattress Topper
Thickness 4 Inch
Memory Foam Type Gel Memory Foam, Memory Foam
Density 3 Pound
Care Instruction Spot Clean
Product Features Antimicrobial, Eco-Friendly, Hypoallergenic
Dimensions See Details
Warranty 90 day Manufacturer
Model Number G400TT
Country of Origin China
  • Most Recent

  • Never slept so good!!
    Verified Purchase

    Excellent topper for the bed in our trailer. Sure am glad we got this!!

    Read More
  • 4 inch memory gel memory foam - wonderful!
    Verified Purchase

    Cant imagine life without it! had it for a year and I still love it!

    Read More
  • Deb
    Verified Purchase

    Bought this for my granddaughter who had stopped sleeping on her new mattress because it was so uncomfortable. She LOVES this topper. Started sleeping on that night and hasn't been back to he couch since!

    Read More
  • I received mislabeled item
    Verified Purchase

    I ordered a Queen size which was not a Queen at all. It easily measures for a Cal King. Took two people to hoist it onto a bed just to see what the heck we got. The ridges where the mattress was folded did not ease up even with pressure. The mattress is air packed so good luck stuffing it back into the tiny shipping pouch. I can't tell about the quality of the mattress because I only got to feel it's weight. It does feel thick and not at all mushy. However, due to the fact that it was crammed into a bag the size of a garment bag, it looks absolutely nothing like the picture with tidy corners. It's more of a shapeless pancake. Overstock would like to receive it back. UPS will not accept it without a box. Spent the last 3 days running around looking for a box this size or a construction bag this wide. Staples has a box that may fit but it's $50. Overstock offered $10....So far, it's a nightmare. Oh, and the mattress has a very strong odor. I reordered the mattress in a smaller size than originally intended because I have a feeling that they run large to begin with. Beware.

    Read More
  • Memory Foam 4" is a dream
    Verified Purchase

    I feel like I am sleeping on a cloud. Painful hips hurt no more with this extraordinarily comfortable dual-layer gel memory foam topper. Worth every penny.

    Read More

Questions & Answers

  • Q:

    "Is this made in USA?"

    • A:

      Hello cutey, this item is made in China. Thank you for shopping with us.

  • Q:

    "Is the cover slick, or will my fitted sheet bottoms slide around and not stay put?"

    • A:

      Hello tommy1725, we appreciate your inquiry. The cover is made of a grippy felt-ish material. We hope this information has been helpful. Thank you for shopping with us!

  • Q:

    "Why did you choose this product?"

    • A:

      It looks to be comfortable and the quality also appears to be worth the money.

    • A:

      Love the cover that the topper is in!!

    • A:

      I need a memory foam mattress for my RV this one looked good because it has memory foam and gel and is covered.

    • A:

      great price and has cover

    • A:

      Good price for item

    • A:


    • A:


    • A:

      I heard great reviews about it.

    • A:

      looking for good price

    • A:

      My husband is a truck driver and will be using this in his truck to help his back.

    • A:

      as a gift

    • A:

      I wanted gel memory form and other filler, it has a cover and the price was good.

    • A:

      need it

    Read more Read less

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. More Details

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

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.