What Our Gearhead(R) Experts Are Saying:"I wore this through a long training block leading up to an ultra and it held up mile after mile. The Dri-FIT ADV fabric wicked sweat fast even on the steepest climbs, and the heavier weight fabric never felt thin or flimsy despite the loose, breathable fit."Steep climbs and long descents on singletrack call for a shirt that can keep pace, and the ACG Dri-FIT UTMB Print Shirt is built for exactly that kind of effort, now at Backcountry from Nike. Created to celebrate the Ultra-Trail du Mont-Blanc, this tee carries real trail running heritage into every wear, whether the goal is a summit push or a long training day. The Dri-FIT ADV fabric wicks sweat away from the skin quickly, keeping things comfortable through hours of climbing and covering ground. The heavyweight polyester cotton blend adds durability without sacrificing the breathability trail runners need, and the loose, structured fit allows full range of motion over technical terrain. This is a tee built to handle real vertical gain and real mileage, not just look the part on the trailhead.