NEW WITH TAGS. never worn perfect condition. Women's UA CoolSwitch Run Short Sleeve. SIZE XS. BLACK. MODEL 5'9" (model wearing size small). "created a specialized hidden print that activates as soon as you start to sweat to pull heat away from your skin—keeping you cooler and more concentrated." UA CoolSwitch coating on the inside pulls heat away from your skin, so you actually feel cooler Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbes Mesh back panel for added breathability Style #: 1363262 Body: 100% Polyester Mesh: 88% Polyester/12% Elastane Fitted: Streamlined fit that’s not too tight or too loose.