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™ helps extend arm and shoulder range-of-motion so you can move freelyMoisture Movement Technology™ helps wick moisture away from the skin to keep you dry and comfortableClimateTEK™ dynamically responds to your body temperature to keep you cool when things heat upFreshTEK™ odor control helps keep you feeling fresh through long hours of wear, Half-zip front, Additional pocket welt Women's Rebar Evolution 12 Zip Top in Powder Quartz, Size: Large by Ariat