The 2021 Posturpedic Memory Foam Collection of mattresses uses multiple layers of Gel Foam and Gel Memory Foam in these all foam mattresses. Designed for body hugging comfort, support that fills the lumbar of the back and pressure relief for your hips and shoulders. Gel infuses foam increases the life and support of the foam as well as reducing heat generated. The moisture wicking cover keeps you dry and cool. This firm mattress is good for a back or stomach sleeper.