Explorer Military Tactical Backpack Army Assault Pack Molle Medic Bug Out Hydration Assault Rucksack Outdoor Sport Travel Trekking Hiking Camping Hunting School Day Pack Explorer  B3 OD Greem color backpack is capable of housing a 72 oz hydration bladder Plenty of pockets and compartments to keep everything organized Reinforced double-stitched nylon seaming for long-lasting durability.Heavy duty coil zippers Built to exacting standards from heavy-duty 600 D Polyester. Large middle compartment - Zippered interior small gear pouches. Polyester 100% Two Medium and small compartments for smaller gear Numerous MOLLE Loops and removable adjustable Padded Shoulder Straps and Waist Belt Huge expandable main compartment - with interior meshed enclosure for small gear. Side and Top cinched down gear security straps