Wetsuits are the most popular form of exposure protection because of their low cost, available styles, and ease of use. Chances are, you'll be wearing one during your confined and open water sessions.

Wetsuits are constructed of a foam rubber called neoprene. The gas bubbles inside the neoprene trap your body heat and warm the water that enters the suit. This material is also extremely flexible, which is necessary for freedom of movement.

Most wetsuits are lined with nylon on both sides of the neoprene. The nylon helps protect the neoprene from tears and cuts. It also allows the suit to slide over your skin with ease, making it easier to don and doff the suit.