Keyhole shaped Key ring!
If you look at the keyhole upside down, it looks like a ring.
It is polished and smooth on the inside of the circle, so you can wear it like a ring.
Put the key on and wear it out.
If you go out with your bicycle key on the keyhole, and wear it as a ring, there is a low risk of losing it.
This is one easy solution for those of us who have a tendency to lose our keys.
It comes in 4colours : Silver, Gold, Black and Copper. Only available in size #13 (JP standard).
Key is not included so you can put any key you like on it, to match your taste.
*When you insert a key, open the "Keyhole", but don't open it so wide.
*Size : Japanese #13 / USA #6.1/2