Geo-Matt PRT Therapeutic Seat CushionsDoctor designed support surface features a geometric cube pattern that allows it to conform to the body and redistribute pressure New RPT design offers a lower, firmer base needed by more active wheelchair users Ring of Air feature helps disperse heat and moisture away from the body 3" high density cushions have a 250 lb. weight limit 4" bariatric cushions have a 500 lb. weight limit 6 per case LATEX FREE Yes, No MATERIAL Foam PRODUCT TYPE Wheelchair