Geigerrig Rig 1600 100 oz (3 L) Bladder w/ quick release valves for drinking tube and pressurization tube for easy refill and reservoir removal Made from 100% heavy duty Ballistic Ripstop reinforcing technique to prevent tearing and ripping Ergonomically fit Shoulder Strap and Integrated Slider Chest strap for added comfort Air Drive Ventilation, Heavy Duty Nylon Pack Handle and Vertical attachment hoops Industrial Size 10 Coil Zippers