Feels like your favorite sports jersey, performs like nothing else. This high-tech, high-comfort T-shirt has a built-in intelligent cooling system to keep you comfortable when the job heats up. Product Features : ClimateTEK 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 wearGreater 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 comfortableSun Protection Fabric helps block harmful UV rays, keeping you covered and comfortable during long days outdoors, Long back hem helps provide extra coverage while you bend, stretch, or reach, Hidden pen slot in left chest pocket helps keep writing tools secure and close at hand Women's Rebar Evolution Mother V-Neck T-Shirt in Coastal Fjord, Size: Large by Ariat