What Our Gearhead(R) Experts Are Saying: "The Syncro 20 is the pack I reach for on big summer rides. The AirSpeed suspension keeps air flowing when it's blazing hot, and the fit stays stable no matter how rough the trail gets. Between the included reservoir, rain cover, and tool storage, it's ready for anything." Built for riders who push through heat, mileage, and changing weather, the Osprey Syncro 20L Hydration Pack keeps us cool, hydrated, and organized for all-day rides. With its ventilated AirSpeed(TM) suspension and tensioned mesh backpanel, this pack maintains airflow across the back to minimize sweat, even on long climbs or humid days. The included 2. 5-liter Hydraulics(TM) LT reservoir ensures consistent hydration with a magnetic bite valve attachment for hands-free sipping on the go. Inside, a bike-specific organization pocket keeps tools and spares neatly arranged, while external stretch pockets and compression straps balance the load. An integrated rain cover protects gear from unexpected storms, and the LidLock system secures a helmet when the ride's done. Constructed from recycled, bluesign(R)-approved nylon with PFAS-free DWR, the Syncro 20L offers premium sustainability alongside proven trail performance. Light, stable, and built to breathe, it's everything we need to stay comfortable and efficient during long days in the saddle.