PRANA Men's Waymann 2mm Vest 100% Other Fibers Imported Performance Spring Vest Made for warm water: 65 Degree+ F/18 Degree+ C 2mm hyper stretch neoprene bonded with 88% Recycled Polyester, 12% Spandex interior and exterior fabrics for comfort 55% Recycled Polyester/40% Neoprene (non-fibrous rubber)/5 Spandex