Columbia Women's Silver Ridge Short Sleeve Shirt 100% Other Fibers Imported Omni-Wick. Omni-Shade UPF 40 sun protection Sun protection collar. Vented Zippered chest pocket Stash pocket Silver Ridge rip; Stop: 100% Polyester Omni-Wick Advanced Evaporation Omni-Shade UPF 40 sun protection Zippered chest pocket Vented in back