Zoot Sports Men's Z Force 1.0 Wetzoot Wetsuit neoprene Front Body: 4mm Neoprene. Back Body: 3mm Neoprene. Upper Sleeve: 2mm Neoprene. Under Sleeve: 2mm Neoprene. Front Leg: 3mm Neoprene. Back Leg: 3mm Neoprene Seat: 4mm Neoprene Machine wash cold, Gentle cycle, No softeners, Dry Flat, Do not bleach, Do not dryclean CN