9-­inch Select-­A-­Firmness Twin-­size Memory Foam Mattress (Soft, Medium or Firm)

Product Info from Overstock.Com:

* Get the rest you need with a memory foam mattress
* Memory foam bedding accessory will provide a deep, relaxing sleep
* Mattress is available in three levels of firmness for your maximum personalized comfort: soft, medium and firm
* Mattress eliminates motion transfer and uncomfortable pressure points
* Uncomfortable pressure-points common in most innerspring mattresses are eliminated
* Composed of one 3-inch layer of 4-pound memory foam and one 6-inch core of traditional high-density urethane foam
* Originally designed for NASA, this space-age foam cradles your body, reducing pressure points that cause tossing and turning
* Can be used with existing box springs or a platform bed
* Memory foam is resistant to dust mites and is naturally antimicrobial
* Measures 75 inches long x 38 inches wide x 9 inches thick

Memory Foam Do's and Don'ts:

1. To maximize memory foam expansion; remove from packaging within 72 hours of receipt.
2. This product arrives very tightly packed. Please unwrap and allow 48 hours for this product to return to its original shape.
3. Being sealed in plastic packaging sometimes traps odors. A few hours of airing usually removes the odor.
4. Due to machine cutting manufacturing processes, there may be slight variances in the dimensions of this product.