Built for trails that test your limits, this technical tee is designed to handle high-output miles on tough terrain. It&';s lightweight, breathable, and powered by TrailGuard(TM) fabric with highly durable nylon to resist abrasion and reduce pilling from packs. It keeps you cool and moving fast, without skimping on toughness. We love it for: trail running and racing Relaxed fit TrailGuard(TM) fabric: 89% Nylon, 11% Spandex Highly durable nylon body, designed to reduce pilling from wearing running packs Bonded seams Created with a patented technology, the seams are stronger than traditional bonding and create a sleeker, seamless look Rear perf panel for breathability Reflective heat transfers Machine wash cold, tumble dry, don&';t bleach Designed in California, made abroad