A technical tee is a wardrobe essential for any sporting activity - as long as it has features for keeping cool while you’re running, hiking the trail or taking a stroll in the park. This Columbia short sleeve shirt is constructed with sweat-activated cooling technology keeping you fresh the more you sweat. It has an antimicrobial treatment and moisture wicking fabric. - Omni-FREEZE ZERO™ sweat-activated cooling fabric- Omni-WICK™ moisture wicking fabric- Antibacterial treatment