The Under Armour Fat Tire GTX trail running shoe takes the previous model to a whole new level. Michelin® WildGripper outsole helps give you a more sure-footed run through muddy and rocky terrain. A Boa® Closure system secures you quickly in place and the Charged cushioning takes the brunt of the impact during tough courses. Your feet will stay dry and stink-free during the long haul with Cupron® Anti-Fungal Pro Fibers that reduce odor & kill 99.9% of athlete's foot fungus after 12 hours in the shoe. Great for cold and wet weather trail runs.Upper: Padded heel collar and textile lining enhance comfort. Boa® Closure for secure fit. 100% waterproof GORE-TEX® construction.Midsole: Charged Foam midsole is cushioned and responsive. Cupron® Anti-Fungal Pro Fibers reduce odor & kill 99.9% of athlete's foot. Outsole: Michelin rubber compound WildGripper outsole provides excellent traction and protection against rough terrain.