The last thing you want when you're miles and miles from the nearest road is a pack full of wet gear. With the Mystery Ranch Pack Fly you'll be able to keep all the contents of your pack nice and dry through down-pouring rain. Available in three different sizes and accommodating packs all the way from 25-105L, it's perfect for everything from quick day hikes to multi-week backpacking missions. A built-in pocket ensures that you can have quick access to snacks and gear that would otherwise be stuck hiding in your pack, and also doubles as a stuff sack when blue skies return and it's time to tuck the fly away for (hopefully) another day.