Columbia Men's Mountain Tech II Short Sleeve Crew-Neck Shirt 100% polyester 100% polyester jersey Omni-Wick advanced evaporation UPF 15 sun protection Machine Wash Cold Gentle, Do Not Bleach, Tumble Dry Low, Remove Promptly, Iron Low, Do Not Use Fabric Softener, If Present Do Not Iron Decal, Do Not Dryclean Vietnam