This short-sleeved performance shirt is designed for hiking, trekking, travel and everyday wear. Made of a super lightweight, fast-drying 100% recycled polyester stretch ripstop, it provides 50+ UPF sun protection and sloughs moisture, thanks to a DWR (durable water repellent) finish. The button-front design has a lay-down collar to protect your neck and a left-chest security pocket that holds a passport. Arms are gusseted for greater mobility and have eyelet venting to release heat; there's also venting across the back yoke. A shirttail hem stays put under pack straps.