AIRHAWK SEAT CUSHION SMALL CRUISER 18" X 12" - 86-9505Stress Relief design features reduced pressure points on the tail bone, scrotum and prostate areas Cell heights on front lowered for better leg passage Ergonomically form fitting design allows better conformity to a multitude of seat shapes and sizes The cover is a breathable spacer mesh cloth material w red vinyl accent, non skid bottom material The inner bladder is manufactured out of Polyurethane Airhawk seat cushions have a lifetime warranty