The Cloud 9 Contrail features Dunham waterproof construction utilizing quality waterproof leathers, synthetics and sealed internal seams. Features a full-length ABZORB removable footbed, which provides superior shock absorption and ideal underfoot cushioning for unmatched comfort. Dunham's proprietary Tru-Trak provides excellent multi-directional traction and long lasting durability. The Cloud 9 Contrail also features ABZORB pods biomechanically positioned beneath the heel and forefoot.