Vivon 11 Inch Gel Memory Foam Mattress, Queen Restech memory foam is our unique formula that uses natural coconut oil and is infused with green tea extract to help control odors in a natural way 4 inch top layer of our gel-infused Restech memory foam, 1 inch high density foam, 3 inches convoluted high density foam, 3 inches comfort curve foam Soft polyester knit with a light grey jacquard fabric cover Ideal for back and stomach sleepers and individuals seeking a medium-firm sleep surface CertiPUR-US certified foam