TheHelm features: Double zippers for accessibility Padded heel cup & instep for ultimate comfort This boot has padded technical lining for comfort, warmth & moisture absorption Naot’s removable, anatomical cork & latex footbed is wrapped in microfiber and molds to the shape of the foot with wear 1.5" polyurethane sole with a metal shank which is extremely lightweight, durable & abrasive to prevent slipping Hand-sewn stroble construction making it strong and extremely flexible