NRS Grizzly HydroSkin 1.5 Jacket - Men's neoprene A convenient front-entry zipper makes the HydroSkin 1.5 Jacket easy to put on or take off as conditions change 1.5 mm Terraprene neoprene with heat-reflecting titanium provides substantial warmth without sacrificing comfort or mobility VaporLoft fleece lining adds warmth, dries in a flash and feels great against the skin Four-way-stretch PowerSpan exterior stretches with your movements for unrestricted paddling Paddler-specific design puts seams where they won't cause irritation