The Syncro 20 is the largest model in this product line. It boasts ample space, and is a good choice for bikepacking. 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 - Scratch-free pocket for sun glasses and phone - LED light attachment - Compression straps - Stretch side pocket - Chest strap with magnet for compatibility with Osprey hydration bag's drinking heads - Lightweight waist strap - Waist strap with pockets - Front panel kangaroo pocket - Raincover included