Perfect for a quick ride or running laps at the local bike park. The Podium Flow Belt carries up to 2-liters of cargo in addition to a 21oz Podium Dirt Series bottle. The bottle is secured and easily accessed using an elastic sleeve and utilizes our Mud Cap to keep dirt and dust out of your hydration. If your rides require more than just a bottle, this is the solution for you. CamelBak - Podium Flow‚ Belt 21 oz