The first, fleece-like layer is made of an anti-itch material that is designed to dry as fast a possible and feel comfortable on your skin. The second layer keeps the wind chill out, which is great for periods in between dives or while you're on a boat and the third layer dries fast and is made of a 4-way stretch material.
Sharkskin Chillproof Longpants can be worn by themselves or underneath an exisiting wetsuit.