Key Features: 12 Litre capacity , 2 Litre hydration bladder with bite valve included, Adjustable chest and waist strapswith zipped pockets, big enough for smart phone, Water-repellent zippers used throughout on all pockets, Main zipped compartment with sleeve for hydration bladder, Additional outer rear zipped compartment, Top small zipped pocket for valuable and smaller items, Integrated tool wrap, Helmet carry straps for open and full face helmets, Whistle incorporated into chest buckle, Padded straps and raised padded back panel (removable) for more comfort, additional airflow and cooling while riding.