Osprey - Syncro 12L Bikepack - One size The Osprey Syncro 12 is a technical, low-profile daypack designed specifically for cycling and mountain biking. It features an integrated AirSpeed backpanel providing significant ventilation via a tensioned mesh design. The pack includes a LidLock helmet attachment system, allowing for secure storage of a cycling helmet. The internal organization is tailored for bike tools, spare tubes, and essentials. The pack is hydration-ready with a dedicated internal sleeve for a reservoir and a sternum strap with a magnetic bite valve attachment. It also includes an integrated high-visibility raincover and reflective graphics to improve visibility.