The Naot Boreas is a unique ankle boot with a contrasting buckle crisscross strap and toecap. The Boreas has a heel cup for stability and a zipper for accessibility. This boot has padded technical lining for comfort, warmth and moisture absorption. Naot's removable, anatomic cork, latex footbed is wrapped in microfiber, leather and molds to the shape of the foot with wear. The Aura Collection features a 1.5'' polyurethane sole with a metal shank which is extremely lightweight, durable and abrasive to prevent slipping. This collection uses a hand-sewn stroble construction making it strong and extremely flexible. Material: Leather, Microfiber, Latex, Cork, Man Made.