Hanks Surplus Military Style Molle Travel Hiking Camping Multi Day 48L Backpack nylon Adjustable contour padded shoulder straps with D-Ring for equipment attachment. Adjustable sternum strap with safety whistle. Quick release buckles on all straps. Four external side compression straps. Reinforced hip area backing with waist strap storage area. Three main compartments with clam shell zipper opening. Main compartment includes removable stiffener, hydration pocket and three zipper mesh pockets. Middle compartment has three zipper mesh pockets. Outer compartment includes accessory pocket, pen holders, ammo mag sleeve with bungee cord and key clip. Hydration pocket with two top Velcro closure exit ports. Two removable tube clips to secure hydration tube. Hydration pocket can fit up to two 3L water bladders. Heavy duty top carry and drag handle. Top zipper for easier access to main compartment. Large paracord zipper pulls for easier pull with gloves and mittens on. Heavy duty YKK zippers. Rugged 500D CORDURA nylon fabric. Large 48 Liter load capacity or 2,926 cubic inches. Approximate total size: 19" Length x 14" Width x 11" Deep. Total empty weight: 4 lbs.