The Naot Boreas is a unique ankle boot with a contrasting buckle crisscross strap & toecap. The Boreas has a heel cup for stability & zipper for accessibility. This boot has padded technical lining for comfort, warmth & 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 & abrasive to prevent slipping. This collection uses a hand-sewn Strobel construction making it strong and extremely flexible.