Inov-8 Men's Trailtalon 275-M 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 power flow delivers 10 percentage better shock absorption and 15 percentage better energy return than standard midsoles Built around the natural anatomy of the foot, the next generation adapter fit met-cradle adapts to the natural movement and swelling of the foot when in motion Integrated gusseted tongue ensures all debris is kept at bay