The Viscol is a classic and timeless loafer complemented with a buckle on the front. The Viscol comes with Naot's removable, anatomic cork & latex footbed for all day comfort. 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.