The TwoFish Quick Cage Adapter XL is a strap-on water bottle holder without the cage. Just add your favorite water bottle cage and strap to whatever location you please. Frame tubes, mast, stem riser, seat post, whever you need or want the cage, you can put it there.
This version of the adapter has a bigger strap, useful for locating on a Bike Friday main tube.
No bottle cage included with this part.