Ogio Dakar 100 Hydration Pack - 100 Ounce/Black Comes with 100 oz. / 3 Liter OGIO bladder made from BPA-free polyurethane film protected by Microban antimicrobial technology Two external side pockets for stowing smaller gear can be used as stirrups in conjunction with the upper compression straps to hold larger items. Clear window for displaying ID, trail map or lift pass Upper compression straps to maintain pack stability and load distribution. 2 stretch mesh pockets on shoulder straps for storing GEL packets and/or Bite Valve docking station Raised Air mesh POD back panel directs airflow cooling down the body while transporting moisture away from your skin. Tailored paneling to control slosh and bladder movement Ergonomically padded Air mesh shoulder straps for wicking moisture away from the body. Large compartment for stowing excess layers of clothing, gear and tools