6 inch mattress is an all-foam layered design. The comfort layer features 1.5 inch green tea gel memory foam to adapt to the natural curves of the body to relieve pressure, while the 4.5 inch Flex support base foam provides lasting durability and support for the comfort layer. The foam mattress features a Graphene cover with moisture-wicking properties to keep you dry while you sleep. And the AeroFusion memory foam infused with green tea gel allows airflow providing added breathability to the mattress to ensure a more refreshing and comfortable night's sleep. The fiberglass-free inner cover of the mattress allows you and your family to rest easier without worrying about the negative effects of fiberglass and other flame retardant chemicals. The memory foam in the mattress has been CertiPUR-US certified, performance-tested and meets standards for content, emissions and durability.