Columbia Women's Silver Ridge Multi Plaid Shirt 100% Other Fibers Imported Omni-Wick product Omni-Shade UPF 30 sun protection Sun protection collar Vented for comfort. 53% nylon / 47% Tactel nylon Omni-Wick Advanced Evaporation Omni-Shade UPF 30 sun protection Vented in back Zippered chest pocket