Engineered to go the distance with you, and guaranteed to perform under any conditions. The Endurance Tee will keep you fresh and cool mile after mile, day after day. In the gym, on the trail, or up a mountain, you need performance gear that works as hard as you do. With the incredible natural odor destroying abilities of Merino, this is the perfect travel shirt for packing light. You can wear it for weeks without washing, for real. This shirt was built to endure everything you can throw at it.