Inov-8 Trailtalon 275 Gtx-U Trail Runner 100% Textile and synthetic Imported Rubber sole For trail running, ultra running. Multi-directional 4mm deep studs, each with a wide contact area, provide aggressive grip, excellent underfoot stability and quick release of any debris. Two-piece Powerflow delivers 10% better shock absorption and 15% better energy return than standard midsoles. Built around the natural anatomy of the foot, the next generation Adapterfit met-cradle adapts to the natural movement and swelling of the foot when in motion. Gore-Tex product technology works to delivery protection from the elements and optimum climate comfort for your feet.