This shirt is made specifically for strenuous and extreme exertion activities, such as training for an ultra-trail, or taking part in trail running. A high-performing shirt could just give you the edge you need, with its sweat-activated cooling technology that keeps your skin dry and comfortable so you can concentrate on your own performance. As a bonus, antimicrobial treatment protects it from bacterial growth, so you stay fresh. Features drop tail hem and reflective detail. FEATURES: Omni-FREEZE ZERO® sweat-activated cooling Omni-WICK® Antimicrobial treatment protects this product from bacterial growth Drop tail hem Reflective detail