SHARKSKIN CLIMATE CONTROL Long Sleeve Wetsuit - The Sharkskin Climate Control Long Sleeve Wetsuit has all the same features as the Chillproof garments with the added benefit of the addition of a heavy-duty zipper. This allows you to control the amount of heat you keep in by adjusting the zipper to suit the conditions. This top is made from Chillproof material with an inbuilt radiator function. It provides the ultimate versatility by being able to zip up for 100% warmth and protection, or zip down when the sun comes out or your work rate goes up. It also has a high collar to keep your neck warm. The Chillproof material is a comfortable micro fleece layer that is next to the skin and wicks moisture and sweat away from the body to help keep you dry. The second middle technical layer is 100% windproof yet breathes to regulate body temperature while stopping windchill. The third outer layer is a nylon/lycra blend for abrasion resistance and 4 way stretch. It is also UV resistant for sun protection and has a durable water repellent finish (DWR) to provide a protective shell that sheds water.