This crazy-soft shirt is made of our lightest, most airy fabric yet. It dries fast, stands up to wear and tear, and rubs less (which means less chafing). Your long runs just got longer. Durable fabric is soft, breathable & lightweight for next-level comfort & ultimate versatility Anti-odor technology prevents the growth of odor-causing microbes Shaped hem with side vent Generous dropped armholes & skinny racerback for full range of motion Style #: 1369777 90% Polyester/10% EPTFE Imported Fitted: Streamlined fit that’s not too tight or too loose. Machine wash cold with like colors Use only non-chlorine bleach if needed Tumble dry low Do not iron Do not use softeners Do not dry clean