The PostureTemp mattress is made of premium Visco-Elastic Memory Foam, perfect for your every day bed or summer home. Spring free material offers superior pressure relief that can dramatically diminish tossing and turning for a more restful sleep. This mattress also features an open cell structure to dissipate heat and absorb motion. This will keep your partner's movement from waking you. A high performance support base offers extraordinary comfort and unparalleled orthopedic support that will outlast any traditional spring based design.