The attachment affects thought, even though I'm curious how long will the delicate-looking flap. Best attached to the holder with the holes for the bottle cage, because the castle is really huge.
Unfortunately, the daily benefit is very limited. The length ranges from only with difficulty, to connect front and frame of a conventional bicycle. Streetlight: impossible.
Annoying are the key. One has the choice between the very clunky LED key or a small spare key. There, however, is the plastic web as a link to your keyring so thin that I the keys just weeks durability certify (see customer images).