Full size 4-inch Thick Memory Foam / High Density Foam Mattress TopperImprove your sleep quality with the supportive and comfortable Full size 4 inch Thick Memory Foam High Density Foam Mattress Topper. 1. 5 inches of temperature sensitive memory foam conforms to your body, and relieves pressure points that can cause tossing and turning. The memory foam is supported by a 2. 5 inch thick high density foam base that restores even support to any mattress. Temperature sensitive memory foam conforms to your body, and