Bikase just announced the appropriately-named ABC Cage (Any Bottle Cage), which accommodates nearly any bottle (how’d you guess?). The system relies on a flexible plastic cage and ratchet strap to securely hold any size bottle.
For gravel cyclists and bikepackers looking to carry non-standard water bottles, this solution from Bikase could be handy. The ABC allows a secure hold on any bottle between 2 1/4″ and 4 3/4″.
Bikase are selling the ABC Cage now for $25. More information is available here –>