Inov-8 Men's Trailtalon 250 Trail Runner 100% Synthetic and Textile 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 Power flow midsole technology delivers 10 percentage better shock absorption and 15 percentage better energy return than standard midsoles Light, breathable upper feels fast, while dynamic fascia band delivers a kick of energy with every stride Integrated gusseted tongue ensures all debris is kept at bay