Lumex R Skin Protection and Positioning Cushion 18 x 18 x 4.5 Provides long-term skin protection and positioning for high-risk patients. Reduces tissue interface pressures at critical points. Features a specialized gel center layer surrounded by comfortable foam layers on the top and bottom of the cushion. Side wedges provide lateral stability to the lower extremities, trochanter and pelvis. Center pommel provides medial thigh support. The soft, stretchable lightweight cover reduces shear/friction and is fluid-proof and has a strap at the back to secure the cushion firmly to the chair. Accommodates a wide range of body shapes, sizes and weights. Bariatric cushions with higher weight capacities are available. 350 lb maximum weight capacity. 2 year limited warranty. This item ships from a separate warehouse and may require extra time for delivery.