Material: High Density Ripstop/Heavy Duty Polyester Size: 39″ x 15″ x 11″ Description: * 7000 cubic inch large capacity for storage, * Zipper at one side enters to main compartment for quick access items, *Zipper at other side enters to large mesh compartment. * Zipper pocket at each side for accessory, * Complete FREE rain cover located in pocket on lower compartment, * A clip down zipper pocket on top for quick access items, * A lower compartment accessible by an outside U zipper or by entering the main compartment from the top, * Waist strap can be open from 20″ to 50″ . * Chest strap with quick release buckle, * Fully packed back panel, should strap and waist strap for more comfort, * Adjustable shoulder strap and waist strap to fit your need, * Adjustable back straps with 6 adjustment of 1.5inch each for any torso size or shape, * Contain 2 internal frame stays and flexible back panel for support and comfortable, * Nice pocket on each side for water bottle, * Expansion cinches on side and top, * Plenty of extra straps and loops for hooking climbing gear.