Boasting dual aluminum frame stays and a massive 5,500-cu.-in. capacity, Alps Mountaineering’s Caldera 90 Pack lets you explore long trails. Padding on the shoulder straps extends all the way to the back to cushion your load over the long haul. Lycra®-spandex-covered suspension straps keep you feeling balanced over difficult trails, while an internal horizontal divider makes it simple to organize your load for balance and convenience. Top-load design has a drawcord closure and an extendable top lid. Large zipper provides simple access to the main compartment from the front. Top pocket converts to a fanny pack for exploring once you’ve reached camp. Lower compartment is easily accessible through a No. 10 zipper. Lashing points and multiple compression straps let you strap items to the exterior. Hydration-reservoir compatible with water ports on both sides so you can sip water from either side. Stretch pockets on the side securely hold water bottles. Comes with both a small and XL removable padded waistbelt with pockets. Rain cover keeps your camp gear dry when hiking through surprise storms. Bungee attachment for trekking poles along with trekking-pole loops and tip-keeper rings. Convenient safety whistle built into the sternum-strap buckle.