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 for hiking or camping. Rebar Evolution 12 Zip Top 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, 12 zip placket, Additional pocket welt Women's Rebar Evolution 12 Zip Top in Powder Quartz, Size: Large by Ariat