These men's Hoka One One Challenger ATR 3 trail running shoe provides cushioned comfort over difficult terrain. Hoka?s midsole geometry includes an early stage rocker for enhanced stability and a smoother ride. The oversized midsole is made from EVA foam for a huge amount of impact absorption. 4mm lugs on a podular rubber outsole creates outstanding grip on all terrains.. Material: Textile & Synthetic Upper/Synthetic Sole