Suede and Mesh Upper - Delivers a breathable, durable shell that keeps feet comfortable and protected. Waterproof Bootie Construction - A fully waterproof membrane keeps the wearer's feet dry and comfortable. Abrasion Resistance - An abrasion resistant, hardened rubber heel and toe provide improved durability. Moisture-Wicking Lining - Wicks sweat away from the skin to keeping the wearer's feet dry and comfortable. Contoured CMEVA Sockliner - Delivers a comfortable, springy platform for a smoother ride underfoot.