Chammyz Boat Coat viscose Bomber- 100 % viscose fleece, Shell-100 % Nylon. Whether you are a surfer, lifeguard or diver who is repeatedly getting in and out of the water, you can depend on Chammyz providing a continuously dry garment. Unlike cotton that will retain moisture, Chammyz will absorb (wick) the water away from the body, and then start an evaporation process immediately. The nylon shell is 100 % waterproof and windproof, combined with the warmth and comfort of the Surf Bomber. Machine Wash Cold, Tumble Dry low, No Bleach, Be Kind to All Animals, People and The Earth Canada