Featuring a built-in intelligent cooling system that works with your body temperature, this premium lightweight baselayer is ideal for outdoor work like construction, gardening and farming. It's also a smart choice to wear hiking or camping. Rebar Evolution T-Shirt Product Features : Greater Arm Mobility for freedom of movementMoisture Movement Technology wicks away moisture from skinClimateTEK for dynamic and temperature regulated coolingFreshTEK sustainable odor-resistance, Pocket on chest Women's Rebar Evolution T-Shirt in Lichen, Size: Large by Ariat