O'Neill Hammer 3/2 Full (Black, Medium) Men's 3/2 wetsuit made of FluidFlex high-stretch neoprene Warm, lightweight material with ultrasoft hand for comfort Flatloc construction is non-chafing and super-durable Lumbar Seamless Design technology keeps water out of suit Double super-seal neck; available in American sizes XS-3XL, MS, MT, LS, LT, and XLS