The Geo-Matrix™ Silverback Tension back for a complete custom contour. With nine adjustable Velcro straps and quick, secure installation, this option provides an easy, flexible solution with the unique ability to accommodate other custom pieces for additional support and further customization. The Tension contains a full back of Geo-Matrix™ gel for pressure reduction and high-density foam for increased support and comfort. For added protection, the Tension also offers padding for back cane posts, and additional Geo-Matrix™ gel sheets are available to further increase comfort and skin protection. CONSTRUCTION One layer of Pillow Top adhered to a closed cell foam COVERS Ultra stretchy and breathable fabric for maximum immersion and temperature control. Wipeable fabrics are available for an additional cost HEIGHT 1.25” STANDARD SIZES 16”x18”, 18”x18”, 20”x18” CUSTOM SIZES All dimensions available