Arc'teryx Alpha SL Jacket

Compact and ready at a moment's notice, the Arc'teryx Alpha SL Jacket is essential weather protection that takes up almost no space in your pack. It's constructed of extremely lightweight GORE-TEX® Paclite® fabric for superior protection from fast moving storms, without weighing you down. Complete with a helmet-compatible hood, the Alpha SL is the perfect emergency fortress for trekking and backpacking.