Rebar™ Heat Fighter T-shirts are 100% dedicated to your comfort with a built-in intelligent cooling system that works with your body temperature and lightweight technical knit fabric that delivers optimal breathability. Rebar Heat Fighter T-Shirt Product Features : 0 : Greater Arm Mobility™ for freedom of movementClimateTEK™ dynamically responds to your body temperature to keep you cool when things heat upFreshTEK™ sustainable odor-resistanceStain repellent, 1 : Ribbed collar and cuffsDrop tail hem, 2 : Patch pocket Women's Rebar Heat Fighter T-Shirt in Norse Blue Meadowbrook, Size: XS by Ariat