The Caldera pack is available in two sizes, granting every backpacker access to this versatile pack. The main compartment has a horizontal divider to keep your gear organized and easily accessible. The lower portion of the pack can be accessed quickly from the large #10 zipper. The main portion of the pack can be loaded from the top with an extendable and removable top lid, that doubles as a fanny pack. Behind the front wing lashing system sits a generous front access zipper allowing you to find exactly what you need without unpacking everything. The side pockets offer room for trekking poles and water bottles to keep you hydrated. Features: - Lightweight polyester - Lycra(R) covered adjustable suspension components - Shoulder strap padding wraps to back for maximum comfort - Dual aluminum frame stays - Internal horizontal divider - Generous front access to main compartment - Full-access lower compartment - #10 zipper - Top pocket converts to a fanny pack - Top loading - extendable top lid - Spindrift collar with draw cord - Front stretch pocket - Front wing lashing system - Trekking pole loops with tip keeper rings - Trekking pole bungee attachment - "Over the top" compression and multiple side compression straps - Stretch side bottle pockets - Rescue whistle buckle on sternum strap - Hydration pocket and ports - H2O outlets on both sides of pack - Removable padded waist belt with pockets - Rain cover included - - Weight: 5 lbs. 15 oz.Capacity: 5500 in^3 / 90L - Torso Range: 16"-22"