The Columbia Men's Silver Ridge 2.0 LS Shirt is a moisture-wicking long sleeve for warm days on the trail. Using Omni-Shade; Technology, the fabric provides UPF 50 protection from the sun. Feel free to roll the sleeves up when you'd like a little more sun, but the fabric will also wick moisture and dry fast. Features of the Columbia Men's Silver Ridge2.0 Long Sleeve Shirt Omni-shade UPF 50 sun protection Omni-wick Vented Roll-up sleeves with tab holders Pockets with hook and loop closure Fabric Details 100% Nylon