SplendoRest Isotonic 8-inch Twin-size Memory Foam Mattress-in-a-Box

Today: $269.99
MSRP: $499.99 $230.00 (46%) off
Out of stock
ITEM# 13600946

    Enter your email address, we will notify you if it comes back in stock.


ITEM#: 13600946

This memory foam mattress from Carpenter Co. features a 2-inch thick top layer of visco elastic memory foam on a 6-inch thick foundation layer of high density support foam. A luxurious microfiber cover wicks moisture away for a cooler night's sleep.

  • Mattress measures 8 inches thick
  • Materials: Isotonic visco elastic foam with microfiber cover
  • Density: 2-inch layer of 12-pound foam, 6-inch layer of 28-pound base foam
  • Resistant to dust mites and is naturally antimicrobial
  • Mattress measures 8 inches high x 38 inches wide x 74.5 inches long
  • Temperature sensitive foam adjusts to your body temperature so you stay warm
  • Originally designed for NASA, this space age foam cradles your body, reducing pressure points that cause tossing and turning
  • Can be used with an existing frame
  • Great for platform beds and slatted frames
  • Meets all flammability standards
  • Knitted polyester microfiber cover
  • Cover care instructions: Spot clean with damp cloth

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.
  • Allow product to air for a few hours.
  • 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.

Isotonic is Registered in U.S. Patent and Trademark Office


Mattress Type Memory Foam
Thickness 8 Inch
Memory Foam Type Foam Memory Foam
Density 2.5 Pound
Support Firm
Mattress Top Tight Top
Product Features Antimicrobial
Recommended Foundation Type Bed Slats Box Spring Platform
Dimensions See Description
Warranty 10 year Manufacturer
Materials Visco elastic foam and polyester microfiber
Model Number 031374535867

Product Reviews

Questions & Answers

Get your product questions answered right here.
  • Is this available in queen size and at what price?

    • Hello, courtingfrog. Yes, you can find the queen size under item number 13600947. Thank you for shopping with us.

  • Hi, We are interested in buying the mattress. Have 2 questions: 1. Can the cover be removed? and washed? 2. How firm is the mattress? Thanks

    • Thank you for your question. Yes, the cover can be removed to wash, HOWEVER, it is very difficult. The mattress will need to be flipped several times in order to remove the cover and again flipped several times to get it back on. Flipping the mattress manually will be like a wrestling match. Firmness is relative….the base is a extra firm conventional foam and the top layer is 2 inches of 2.5 pound density memory foam. It’s a pretty firm mattress. Have a great day.

Shopping Tips & Inspiration

Shipping & Returns

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

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

* 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.