SupportPro Antithrust CushionsProvides anterior build up at midline to prevent forward ischial migration. Revolutionary Moleculon foam provides increased comfort and decreases the probability of pressure sores. Non contoured seating surface allows for easy transfers. Waterfall front, coccyx cutout and large radius bottom provides versatile surface for sling or flat seated wheelchairs. Soft easy to clean removable Solace cover is fluid proof and provides multi directional stretch