Columbia Men?s Zero Rules? Light Graphic Technical T-Shirt.Hike through the heat in this Columbia men?s crew neck t-shirt with Omni-FREEZE ZERO? sweat-activated cooling system to keep you feeling cool when temperatures rise.The sweat-wicking fabric and side panels draw moisture away from the skin to keep you fresh, even on tough days.Composition:100% Polyester, 52% Recycled Polyester, 48% Polyester.Washing cares:Machine Wash Cold Gentle, Do Not Use Stain Remover, Wash Separately, Do Not Bleach, Tumble Dry Low, Remove Promptly, Iron Low, Do Not Use Fabric Softener, Do Not Dryclean.