Tilos ISIS Lady, 1mm Metalite Coated Neoprene One Piece Swimsuit for Women 1mm 100% high stretch metalite coated neoprene Metalite coating warms the body, retaining as much heat as a 2-3mm Can be used as a standalone wetsuit in warmer waters or as an undergarment to a standard neoprene wetsuit for added warmth in cooler water. Sleek and flattering, the Tilos Isis swimsuit is an all-in-one suit that's shaped like a traditional one piece with added neoprene for colder temperatures. Front zip for easy donning and doffing