The Patagonia Men's Long Sleeved Self Guided Hike Shirt is a versatile, easy-care long-sleeved shirt for trail and travel made of lightweight, quick-drying recycled polyester ripstop with 50+ UPF sun protection. Fair Trade Certified™ sewn. Features and Specifications Made of 100% recycled polyester woven ripstop with 50+ UPF sun protection Button-down collar Full-length buttoned placket Patch chest pockets with button-and-loop flap closures; left pen pocket;  Midback vertical vents for ease of movement and ventilation even when wearing a backpack When rolled-up, sleeves secure with self-fabric tabs; shirt has buttoned cuffs A shirttail hem keeps your shirt in place during movement and stays put under a hipbelt Weight: 174 grams Materials: Body: 2.8-oz 100% recycled polyester woven ripstop with 50+ UPF sun protection. Back panel: 2.1-oz 100% recycled polyester warp-knit tricot mesh with HeiQ® Fresh durable odor control. Fair Trade Certified™ sewn Patagonia Men's Short Sleeve Self Guided Hike Shirt, 50 UPF