Features 12L capacity 2L hydration bladder with bite valve included Adjustable chest & 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 & smaller items Integrated tool wrap Helmet carry straps for open & full face helmets Whistle incorporated into chest buckle Padded straps & raised padded back panel (removable) for more comfort, additional airflow & cooling while riding