This Spinal Response Aloe 8-inch memory foam mattress provides a comfortable rest. The 0.5-inch gel-infused memory foam top layers provide a clean and healthy night's sleep. Mattress measures 8 inches thick Materials: Aloe-infused gel memory foam First layer: 0.5-inch layer of 4-pound density gel infused memory foam Second layer: 3-inch layer of 3-pound high density memory foam Base layer: 4.5-inches layer of high density reflex base foam Dimensions: 8 inches high x 59 inches wide x 79 inches long Memory foam is resistant to dust mites and is naturally antimicrobial Originally designed for NASA, this space age foam cradles the body, reducing pressure points that cause tossing and turning Temperature sensitive foam adjusts to body temperature so you stay warm Improves circulation Mattress eliminates motion transfer and uncomfortable pressure points Never needs turning Disperses weight evenly Mattress can be used with an existing frame Bed frame not included Meets all flammability standards Quilted jacquard cover with handles (not removable) 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 non-returnable.