Ultimate Direction Wasp Hydration Backpack, Spectra 64oz/1.9L Reservoir Included Weight 1 lb. 5oz/595g Storage 390 in3/6.9L 3D AirMesh back panel and shoulder straps for optimal ventilation Top-loading reservoir pocket w/ hanger Top pocket Zippered front pocket Two front mesh pockets attached to shoulder straps Zippered pocket on lower right front strap Multi-use pocket with bungee closure on lower left strap Mesh pocket on back