The Arc'teryx® Ossa Overshirt is an essential mid-layer for high-exposure hikes that leverages breathable, UPF 50+ material for sun protection. Easy to layer over a tee or tank, its textured nylon ripstop minimizes skin-sticking in hot conditions. The pop-up collar protects your neck when the sun's beating down. It features a hidden button-front closure, long sleeves with buttoned cuffs, a zippered pocket at the left chest with signature brand logo, and a straight hem. It conveniently packs into its chest pocket, making storage easier.