Topeak Air 2Core BackPack Compartments Two Main / Two Side Pockets / One Front Pocket / One Bottom Pocket Fits Waist 28"-38" / 71.1-96.5 cm Capacity 10.7 L / 650 ci (Bag) / 1.5 L / 91.5 ci (Hydra) / 7 Pockets (Gear) Packed Size 13 x 24 cm / 5.1 x 9.4 (Bag only) Weight 640 g / 1.41 lbs (Bag only) / 130 g / 4.58 oz (Hydra) / 90 g / 3.17 oz (Gear)