Crafted to specifically meet the needs of trail, and ultra-distance running for elite athletes, the Ultra Trail 2 shoe features specially formulated Ud Foam for the ultimate in efficiency and energy return. It also features a Vibram Megagrip traction outsole that will define a new standard in speed and versatility over the harshest of terrains. The nylon upper is highly durable while remaining lightweight and flexible, and the no-sew overlay provide critical protection without sacrificing speed and feel. This shoe is the complete package for attacking the elements.