SIDI ARX Waterproof Riding Shoes - Full BlackSIDI ARX Waterproof Riding Shoes Waterproof sneaker with Fortex shank, D3O protection and Vibram sole The ARX protective riding shoe is one of the cornerstone's of Sidi's urban riding range, offering an Air and Waterproof option in a casually styled shoe. After asking the question, can a riding shoe be as comfortable as a casual one?, Sidi engineered Fortex, an innovative protective sole insert to maintain incredible flexibility and greater walking