You've never been afraid to sweat, and the Columbia Women's Quickest Wick Short-Sleeve Top helps deal with moisture and boost your body's natural cooling mechanisms so you can get after it despite the heat. Flexible elastic pinhole fabric helps keep you cool and comfortable in hot weatherStretchy jersey with Omni-Wick EVAP tech underarm panels help manage moisture by moving it away from your skin and helping it evaporate quicklyAntimicrobial treatment helps inhibit the growth of microbes so your shirt won't reek if you have to skip a washing or twoOmni-Shade tech provides UPF 30 to shield you from the sun's less-awesome effectsActive fit is built for movement without extra fabric to get in your wayFlatlock seams reduce friction and chaffing