Vivon 13 Inch Gel Memory Foam Mattress, Cal King 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 1.5 inch quilted Restech memory foam, 3 inches gel-infused Restech memory foam, 1 inch high density support foam layer, 3 inches convoluted foam, 4.5 inches comfort curve foam Soft polyester knit with a light grey jacquard fabric cover and dark mesh border Ideal for side sleepers and individuals seeking a soft sleep surface CertiPUR-US certified foam