Rg-360 Double mattress Double foam Double density Double comfort Will not deform easily Bottom mattress (adjustable bed) comes with 4 sections of wooden board 2 mattresses design porlongs the lifespan of the top mattress Breathable fabric, more hygenic, less bacteria, German motor, high stability, less energy consumption, safe 2 masssage motors 4 memoriess of preferred positions Other sizes are also available