PERFORMANCE: High performance solar knit is wrinkle resistant and quick drying to allow easy maintenance and multi-purpose use SUN PROTECTION: UPF 50 fabric filters out harsh UV rays to prevent sun damage, and a mock neck provides extra protection from the sun LAYERS: Don't worry about removal, the 1/2 length front zip means you can zip open the top for ventilation once you've conquered the summit MOVEMENT: Low profile thumb holes keep the sleeves secure around your hand, while gusseted arms provide chafe-free movement MOISTURE WICKING: Solar knit material is moisture wicking, keeping you dry while providing warmth and protection against the wind One of our classics re-tooled, the Canyon Long Sleeve Shirt is the ultimate wrinkle-resistant, quick-drying shirt for hiking and trekking. Made from 100% polyester dobby fabric, it combines durability and performance all in lightweight package