It holds your drinking bottle within reach. The lightweight polyethylene cage easily mounts to bike panniers, backpacks or any other bag, and securely holds proprietary bottles up to 0.75 Litre. / 45 in^3. It comes with a mounting set for waterproof fixing to the bag, which allows the cage to be taken off while the mounting set stays on the bag, as it is also compatible with the ORTLIEB outer pocket or mesh pocket (both products are available as accessories).
Ortlieb bottle cage for pannier bag