Sleeptime®’s only full-body foam mattress, the High-Resilience foam (HR-Foam) mattress uses the highest grade of polyurethane foam. This foam is extremely elastic that contours to the body exceptionally well-providing optimal supporting force to your body. It is a highly durable foam providing a solid platform used to prevent body impressions and sagging to extend the life of mattresses. The advanced cellular structure of this foam subtly absorbs the motion of your body and you can easily get in and out of the bed without disturbing your partner.