Mystery Ranch In and Out 18From day trips to summit bids, here's a pack that's always ready when you are. The IN AND OUT 18 is your featherweight solution to getting to where you're going, quickly and comfortably. So much more than a glorified stuff sack, this highly compressible yet fully engineered summit pack features contoured shoulder straps and a sternum strap for a secure, snug fit. Designed to stuff into its own front, mesh pocket, it fits neatly in your backpacking