Osprey Katari 1.5L Men's Biking Backpack with Hydraulics Reservoir, Black

Ideal for fast rides that require only the water on your back, the Katari 1.5 lets you carry the bare minimum.

The high-quality, low-profile design features an included 1.5-liter reservoir that slides into its own exterior pocket with a bite valve that attaches magnetically to a sternum strap.

A well-ventilated mesh harness offers exceptional airflow and rolled, soft-edge shoulders provide contoured comfort and stability.

In the event you find yourself outside when the sun goes down, a loop for your rear tail light lets you be seen.

Made with mountain bikers in mind, but practical for any activity where hydration is a must.