Waterproof 600D nylon, seam sealed waterproof construction, removable 6Mm zylex liner (97 percent recycled content), moisture wicking lining, easy adjust d-ring lacing system with bungee lace lock, adjustable midfoot velcro strap, waterproof and lightweight rubber and lt, sup and gt, he and lt, sup and gt, shell and outsole, built in the USA, -25F/-32C temperature rated