The Mountain Hardwear Men's Canyon Long Sleeve Shirt is the ultimate low maintenance and wrinkle-resistant, quick-drying shirt for hiking and trekking and travel. You will love the back vents that keep you cool and a UPF 30 to protect you from the sun.Body: Canyon Dobby (100% Polyester)UPF 50Zippered chest pockets double as core ventsRoll-up sleevesSun collarSmart seamsStandard fitFabric weight: 3oz/82gCenter back length: 30"/76cm