Columbia Women's Windefend Long Sleeve Top polyester 100% polyester Windefend, 90% polyester/10% elastane Slick Knit Omni-Wick advanced evaporation Omni-Wick advanced evaporation 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 dry clean China