Mattresses and Accessories - Drive, Therapeutic Foam Pressure Reduction Support Mattress : The Drive Medical Therapeutic 5 Zone Support Mattress is a deluxe, horizontal, cross-cut, 5 zoned foam mattress which provides comfort, support and pressure redistribution. It comes with a best in class, 2-way stretch cover that reduces friction and shear, and is water resistant and vapor permeable, ensuring user comfort.