Columbia Sportswear Men's Tall Tamiami II Long Sleeve Shirt Omni-Wick Ripstop 100% polyester Imported Omni-Wick Shirt Omni-Shade UPF 40 sun protection Antimicrobial treatment protects this product from bacterial growth Quick dry. Vented. Roll-up sleeves with tab holders. Rod holder Omni-Wick Advanced Evaporation Omni-Shade UPF 40 sun protection Intended to protect the garment from odor Caused by bacteria Roll-up sleeves with tab holders