Camelbak BFM 100 oz/3L Easy to fill and clean Pack Weight: 5.5 lbs with empty reservoir Capacity: 100 oz., Dimensions: 21in x 20in x 14 in Cargo Volume: 2929 cu in (48 L) Weight: empty reservoir: 5.6 lbs. (2.53 kg) - filled reservoir - 11.8 lbs (5.36 kg)