Good Concept - Too Bad They Leak
This is a nice, sturdy glass bottle, with a spring clasp and a wire hanger. The problem is, the tube has a ball bearing type stopper that leaks when you invert the bottle into the cage drinking position. Apparently, there is a manufacturing defect. Perhaps the tube is at the wrong angle to allow the stopper to prevent leaking. When in the fully upright position, the entire contents will eventually leak out, a drop at a time. That is not acceptable. I bought two and both had the same problem, so I returned them. It is a very nice design; it is a shame this problem exists.