ALPS Mountaineering Caldera 90 Internal Frame Backpack

The ALPS Mountaineering Caldera 90 is a large-volume internal frame backpack built for backpackers who need to carry a heavy multi-day load without sacrificing organization or comfort. An internal horizontal divider splits the main compartment so your gear stays sorted, and a full-access lower compartment with a #10 zipper means you can reach your sleeping bag or base-layer clothes without unpacking everything above it. Dual aluminum frame stays and an air mesh-covered suspension keep 90 liters of gear riding stable and let air move through on a hot climb, while the pull-forward waist belt lets you cinch the load down on the fly. Internal horizontal divider keeps the main compartment organized and easy to access Full-access lower compartment with a #10 zipper gets you into the bottom of the pack without digging through the top Top-loading, expandable top lid doubles as a fanny pack when you’re off the trail and don’t need the full pack Front wing lashing system backed by a generous front access zipper lets you reach gear without unpacking the main compartment Dual aluminum frame stays and air mesh-covered suspension transfer weight to your hips and keep air flowing on your back Removable, padded waist belt with pockets and a removable sternum strap with a rescue whistle buckle dial in the fit and add safety on the trail Stretch side bottle pockets and traditional trekking pole loops keep water and poles within reach Hydration compatible with ports on both sides and a three-point reservoir attachment, so you can drink on the move from either strap Rain cover stows in a zippered pocket on the bottom of the pack, ready the moment weather turns Fabric: 200D nylon double ripstop Capacity: 90L / 5,500 in³ Torso range: 16 – 22 in. Waist belt range: 32 – 51 in. Weight: 5 lbs. 15 oz. Colorway: Black/Gray