The heart of CW-X is an obedience to the structure of the body, made possible by Coolmax and Lycra fibers. Coolmax is the fastest-drying fabric known to man. It moves moisture instantaneously from the body out to the fabric's outer surface, where it evaporates at twice the speed of cotton. This keeps you cool at even the highest temperatures. And with less energy spent cooling the body, you'll have more energy left to help you excel. Lycra, on the other hand, possesses the unique ability to stretch while still retaining its shape.