At mile 50, the last thing on your mind should be your shirt. The Windchaser is so airy and light that it practically disappears, simply delivering highly breathable wicking performance and cool comfort. It’s made with ultralight polyester—fast-drying double knit in the main body (100% recycled), and open venting mesh in the upper panel. Bonded seams and set-in sleeve construction, with underarm gussets, eliminate chafing and allow a full range of motion. It’s tagless at the neck for itch-free comfort, has a locker loop for easy hanging, and the reflective logos on left chest and center-back neck keep you visible. Polygiene® permanent odor control throughout.