The EquaGel Straight Comfort Gel Cushion continually adjusts and redistributes pressure with its unique grid design. The dry-polymer flat gel cushion provides comfort and support and has a rubbery feel. This cushion is the most popular EquaGel wheelchair seat cushion in skilled nursing and rehabilitation facilities. The EquaGel Straight Comfort Gel Cushion features a revolutionary grid structure that is soft and supportive and continually adjusts to the user's movements. The most amazing feature of EquaGel cushions is column buckling, the way the gel grid responds to the weight of the user. Each wall of gel supports only a light load. When that threshold is exceeded, the wall of gel buckles into the hollow area between walls and passes the weight to the surrounding walls for support. This pressure redistribution happens instantly and repeatedly until the maximum surface area of pressing weight is evenly supported and the pressure is equalized. The EquaGel Straight Comfort Gel Cushion is 1.75 inches high. The top layer is a thin wall of gel with a tight grid configuration for added comfort. The bottom layer is a thicker wall of gel with a wider grid for deep posture support. The four way stretch cover maintains airflow and is fluid resistant. Velcro patches are included to secure the cushion to the chair. The cover also features a handle for easy transport. EquaGel Pressure Map Comparisons EquaGel Straight Comfort Cushion Specifications: Cover: 4 way stretch, vapor permeable, fluid resistant, washable. Height: 1.75 inches. Sizes: 16, 18, 20 or 22 inches wide. 16, 18 or 20 inches deep. Weight Capacity: 500 lb. Made in: USA.