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. New without tags. Display Greater Arm Mobility™ for freedom of movement Moisture Movement Technology™ wicks away moisture from skin ClimateTEK™ for dynamic and temperature regulated cooling FreshTEK™ sustainable odor-resistance