Five Ten Trailcross GTX Flat Shoes - Men's Core BLK / DGH Solid Gray / FTWR White 12.5Five Ten Trailcross GTX Flat Shoes Mens Core Black DGH Solid Gray FTWR White 12. 5. Designed to withstand the elements and provide comfort on rugged trails the Trailcross GTX Flat Shoe blends a durable hiking inspired build with a high friction Stealth Phantom rubber outsole. Bike and Hike outsole: designed for grip at the toe and heel whilemaintaining a pedal platform under foot Weather friendly GTX (Gore Tex) mesh upper for breathability and comfort