Head out into your local mountain range for a weekend trek with the JanSport Klamath 55 Backpack. This 57-liter capacity backpack combines a supportive suspension system, torso and shoulder fit adjustability, and an array of functional pockets. The backpack's GridFit system allows you to adjust the length of the torso from 15 to 19 inches, as well as set your preferred shoulder strap width. Once you have that dialed, fine-tune the fit of the padded shoulder straps, hip-belt, and sternum straps for optimal load balance. Make final load-balancing and load-securing adjustments with the bottom and multiple side compression straps. Once you start powering your way up the trail, a plastic sheet and aluminum stays running along your back support your load as well as keep items inside the backpack from rubbing up against you. The back panel is fully padded, and includes a ventilating channel for enhanced comfort. The large main compartment with a drawstring closure provides plenty of room for your tent and bear canister, and keep your sleeping bag in a separate zippered compartment with an internal shelf (for holding whatever else you want to separate out with your sleeping bag). Store smaller items you'd like quick access to in the easy-access pockets on the hip-belt, sides, front, and hood. A dedicated internal compartment holds up to a 3-liter hydration reservoir (not included), and includes a port for the tube. The shoulder straps are outfitted to hold the reservoir tube securely in place so it stays out of your way. If you're taking the backpack on a plane trip to your ultimate destination, large carry and haul handles make it easier to manage during your travels.