What makes an OluKai sandal truly built to last? They like to think its a few things: tradition, craftsmanship, and attention to detail. The Hiapo is constructed with naturally tumbled or marbled full-grain leather using hand-sewn traditional whipstitching, complete with Polynesian tattoo artwork details on the footbed. One of their original sandals (hence, its namesake), Hiapo only gets better with age. Made for the beach, not the oceanprolonged contact with water may cause damage.