Columbia Women's Silver Ridge Sleeveless Shirt 100% polyester Silver Ridge stretch, 92% nylon/8% elastane Swift knit pique Omni-Shade UPF 30 sun protection Omni-Wick advanced evaporation Machine Wash Cold Gentle, Wash Separately, 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