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 stroble construction making it strong and extremely flexible. This boot also features Naot's removable anatomic cork & latex footbed wrapped in microfiber and leather which will mold to your feet with time and wear. Shown here in Shiitake and is also available in other colors in sizes 35-42.">