SHERPA ADVENTURE GEAR Men's Tsepun Pullover 82% Nylon, 18% Polyester Imported Fabric blocks 99% of UV rays (50+ UPF) You'll think of all kinds of reasons to wear this super soft casual crewneck pullover; it feels fantastic against the skin Dry-Zone is both a bi-component and a double weave fabric, meaning the interior weave absorbs moisture, while the exterior surface disperses it Woven with anti-bacterial silver ions to minimize odors Raglan sleeves have flat-locked seams to reduce chafing that can occur under pack straps