The softest long sleeve you&&';;ll ever slip on. With perfs all over, it&&';;s lighter and more breathable than ever. The EZ call for any trail run. We love it for: everyday trail running and working out Quick n&&';; Fit Perf: 94% polyester & 6% spandex Super soft, lightweight & quick-drying Perforated all over Tailored fit Machine wash cold, tumble dry low, don&';t bleach, mmkay? Designed in California, made abroad *We do not recommend wearing this product with a hydration pack.