Sharkskin Ladies Chillproof Back Zip Full Wetsuit Sharkskin Chillproof is an aquatic specific, windproof 3-layer composite material that has been developed for water sports athletes. The 1 piece suit provides full body protection from cold, sun and marine stingers It can be used under an existing wetsuit for extra warmth or can completely replace your wetsuit in warmer waters It is less buoyant than neoprene so you need less weight, making you more comfortable when snorkeling or diving. Chillproof is neutrally buoyant, anti-microbial, odour resistant, itch resistant and machine washable.