NRS Radiant 3/2mm Wetsuit - Men's No more cold, damp wetsuit in the morningexclusive VaporLoft lining eliminates clamminess and feels soft and warm against your skin 3 mm Terraprene neoprene in the chest, back, shoulders and most of the legs provides warmth where you need it most 2 mm Terraprene under the arms, along the sides of the chest and behind the knees allows excellent mobility for paddling, rowing and swimming PowerSpan exterior fabric stretches with your every movement for unrestricted range of motion Smooth-skin neoprene on the chest and back reduce evaporative cooling