The Lezyne Flow Storage Drive Cage. Durable, fiber reinforced Composite Matrix construction. Optimized side-load shape for easy bottle access in compact frames (right side configuration only). Integrated storage container below the cage with CO2 cartridge holders on both sides of the cage. Engineered to hold bottles securely. Oval mounting holes allow fine tuning of position on frame.  Lezyne Flow Storage Drive Cage Features Composite Matrix. Side-load. Integrated storage container. CO2 cartridge holders.