The SeasonFive Crestone 2.5L is the ultimate jacket for outdoor enthusiasts providing the protection and technology for extending your season. The Crestone shell has an ultra lightweight stretch 2.5-layer outer shell fabric with 25k/20k waterproof/breathablity and introduces a patent-pending pack-pass system allowing you to strap your backpack through the jacket as opposed to over the jacket so that it doesn't ride up. Other features include a drop tail, ripstop nylon, tailored panels for ultimate mobility, engineered stretch, and lightweight fully-taped interior with heat transfer logos. The jacket packs up very small so you can always have it with you in case of a condition change. It also has a shaped and welded brim on the adjustable hood.