A wetsuit acts as a second skin. Wetsuits allow a small amount of water to permeate and sit next to your skin. As this water is warmed by your body heat, it is kept from leaving, keeping a layer of warmth surrounding your body instead of a constant exchange of cold water. Wetsuits are an essential piece of gear for any activity with cold or cool water immersion. They not only keep you safe from hypothermia but also allow everyone to have more fun in the water.
A full wetsuit covers the legs, arms, and torso. These suits provide the most coverage and will keep you the warmest. The torso generally has a thicker layer of neoprene to provide more insulation and keep you extra warm where it counts. The arms and legs will be slightly thinner to increase mobility and range of motion.