So EZ to love it may be hard to take off. With perfs all over, this impossibly soft tee is lighter and more breathable than ever. Everything you could want in a trail running top. 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.