The Zone 3 Neoprene Warmth Vest is designed to be worn underneath a wetsuit in cold conditions or on its own in warm conditions. Designed with a comfortable, flexible fit, this vest provides additional, ideal warmth when you need it. Composition Allover 2mm neoprene. Features & Benefits Neoprene wetsuit vest. Designed to be worn under wetsuit in cold water. Can be worn instead of wetsuit in warmer water. High-neck design: For comfort and additional warmth. Fits comfortably against skin with optimal flexibility. Country of Origin Imported