SplendoRest Isotonic 10-inch Twin-size Memory Foam Mattress-in-a-box

by Splendorest
Today: $411.99
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ITEM# 13606850
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ITEM#: 13606850

This memory foam mattress features a 3-inch hole-punched top layer of visco elastic memory foam over a 7-inch layer of high-density base foam. This bedding increases air circulation for a cooler night's sleep.

  • Measures 10 inches thick
  • Materials: Visco elastic foam with microfiber cover
  • Density: 3-inch layer of 3 pound ventilated Isotonic brand visco elastic memory foam over a 7-inch layer of 1.8 pound high density base foam
  • Measures 10 inches high x 38 inches wide x 74.5 inches long
  • Resistant to dust mites and is naturally antimicrobial
  • Temperature sensitive foam adjusts to your body temperature so you stay warm
  • Ventilation holes increase air circulation for cooler sleep
  • Improves circulation while reducing pressure points that can disrupt sleep
  • Eliminates motion transfer
  • Can be used with an existing frame
  • Great for platform beds, slatted frames
  • Meets all flammability standards
  • Knitted rayon microfiber cover
  • Cover care instructions: Spot clean

Memory Foam Tips:
  • Remove from packaging within 72 hours of receipt.
  • Unwrap and allow 48 hours for this product to return to its original shape.
  • Being sealed in plastic packaging can trap odors. A few hours of airing usually removes the odor.
  • There may be slight variances in the dimensions.

The firmness level of every item is unique. Please be advised that even similar products may produce different firmness results

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

Once opened this product is non-returnable.


Mattress Type Memory Foam
Thickness 10 Inch
Memory Foam Type Foam, Memory Foam
Density 3 Pound
Support Soft
Mattress Top Tight Top
Product Features Antimicrobial, Bed in a Box
Recommended Foundation Type Bed Slats, Box Spring, Platform
Size Twin
Dimensions See Details
Warranty 10 year Manufacturer
Model Number 031374535782
Country of Origin United States

Product Reviews

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  • Most Recent

  • Unbelievable Comfort for the Price
    Verified Purchase

    My 21-year old has a most comfortable mattress purchased from Overstock back in 2002. It is still in great shape (she is very thin, LOL). When it was time to move my young daughter out of her toddler bed, I pulled back the mattress pad to see the brand of my older girl's mattress. Isotonic. Came to Overstock website and was thrilled they still carried Isotonic. This mattress is SO VERY COMFORTABLE. I cannot begin to tell you. My girlfriend slept over on this mattress for a few days and said she was getting THIS mattress. I will be needing a new mattress soon and will be getting an Isotonic. You cannot beat the price for the quality.

    Read More

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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.
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.