100% ULTRAFLEX DS NEOPRENEHigh-performance super-stretch neoprene with a durable outer skin that resists velcro pulls and snags. Stretch factor: 150%100% sealedTacky gripSingle lined for a windproof outer surface :: Men > Wetsuits. 100% sealed for added protection against the icy waves5mm for warmth and protection from the oceanTacky gripCrafted from 100% UltraFlex DS neoprene for complete freedom of movement Size: X-Large,X-Small,Medium.