Arc'teryx's lightest shell the Alpha SL Jacket for men takes a straightforward approach to alpinism. Full storm protection in a minimalist design provides just the right defense against hostile storms. Built with weight-shaving GORE-TEX® PacLite® a helmet compatible storm hood laminated cuff hem with quick-dry chin guard and laminated pit zips seal against the weather. Designed at hip length one hand pull cords and chest pocket add quick convenience.