The Syncro 12 fits crucial tools, extra energy, a shell jacket and hydration bag as well as some extra gear. Its zippered tool pocket keeps your pump, tire levers and other small items in check. - The harness system is optimized for cycling - AirSpeed back panel made for active sports: it allows for air flow between your back and the pack - LidLock helmet holder - Scratch-free pocket for sun glasses and phone - LED light attachment - Compression straps - Integrated hi-vis rain cover - Kangaroo pocket at front panel - Chest strap with magnet for compatibility with Osprey hydration bag's drinking heads - Lightweight waist strap