WEBRIL is ideal for use with either synthetic or plaster casting materials. Padding is constructed of 100% purified cotton fibers for soft and natural cushioning It is also processed to minimize bulk, helping to keep it in place under cast. Wet or dry, padding retains its consistency so that as it absorbs moisture from skin, it will not collapse. Conforms to all body contours. WEBRIL Padding is made with the shortest of fibers for a hook-and-loop effect that gives it both stretch and cohesiveness, holding it in place without shifting or bunching, and preventing pressure points.