Wheelchair Cushion Foam Gel 24X18X3 E & J Duragel Base 3 Mattresses and Support Surfaces Meets OSHA regulations Mounting Tape & Putty Meets OSHA regulations Dynarex Gauze Sponges are 100 percent sterile cotton gauze sponges The cushion uses a high density base foam for durability in combination with a convoluted topper for comfort and airflow Features a comfortable convoluted foam topper with a high density base foam Features a specialized Dura Gel™ center layer surrounded by comfortable foam layers on the top and bottom of the cushion The cover has a four way stretch top with a no slip base fabric and has a strap at the back to secure the cushion firmly to the chair Accommodates a wide range of body shapes