Columbia Women's Trail Flash Half Zip Shirt Omni-Wick Anytime 85% polyester / 15% elastane stretch jersey. Imported Omni-Wick Hoodie Omni-Shade UPF 50 sun protection. 4-way comfort stretch Thumb holes. Reflective detail Omni-Wick Advanced Evaporation Omni-Shade UPF 50 Sun Protection 4-Way Comfort Stretch Thumb Holes