A pack full of wet gear really puts a damper (emphasis on the damp part) on any trail excursion, even when you're only a few miles from the trailhead. With the Patagonia 15-30L Pack Rain Cover you'll be able to keep all of your layers, snacks, maps, and gear dry on wet-weather day hikes. Thanks to the waterproof nylon fabric, taped seams, PU and DWR (Durable Water Repellent) coatings, this pack cover is sure to deliver all the protection that you need when Mother Nature decides to dump some rain your way. The cinch closure pulls it in tightly to ensure that you've got a snug and secure fit, while the reflective logo helps boost your visibility in the poor lighting conditions that stormy weather often brings. Plus, there's an easily-accessible zippered stash pocket on the inside that'll keep important items close by instead of buried somewhere in your pack pockets, and also doubles as a stuff sack when blue skies and sunshine return.