Arc'teryx Ossa Overshirt

The Arc'teryx Ossa Overshirt is a breathable, button-up midlayer designed for high-exposure hiking. Its UPF 50+ recycled nylon stretch ripstop helps protect covered areas from the sun, while the textured fabric reduces skin-sticking in hot conditions.

A pop-up collar adds neck coverage, and the overshirt packs into its own chest pocket for easy carrying. The relaxed fit layers comfortably over a tee or tank, making it well suited to men who want lightweight sun protection and practical trail performance.