NRS 3.0 Farmer John Wetsuit neoprene 3 mm Terraprene neoprene for outstanding warmth 4-way stretch PowerSpan in the chest down to the belt line and along the sides adapts to your movements for unrestricted range of motion and improve fit Generous armholes give you excellent freedom of movement Durable glued and blind-stitched seams reduce water entry and are smooth and comfortable against the skin Titanium laminate adhesive reflects heat back to your body, keeping you warmer