Columbia Men's Trail Flash Half Zip Jacket 100% Other Fibers Imported Omni-Wick Omni-Wick Omni-Shade UPF 50 sun protection Antimicrobial treatment protects this product from bacterial growth Reflective detail Omni-Wick Anytime 85% polyester / 15% elastane stretch jersey Omni-Wick Advanced Evaporation Protects this Product from Bacterial Growth Reflective Detail