Synthetic Upper, Inspired By The Shoe That Started The Trail-Running Craze, This Thong Looks Rugged Yet Feels Incredibly Comfortable. The Perfect Choice For Relaxing Between Trail Runs. Upper Is Adjustable thong Bandage. Synthetic Material Mix For Interesting Looks. Inlay Is EVA Insole For Comfort. Midsole Is Molded EVA For Lightweight Cushioning. Outsole Is Rubber Outsole For Durability And Comfort.