The mirror itself loosens from the ball and socket area and there is no way to tighten it. This happened just after the first time biking with it. The attachment is cheap and not secure. Plus there is no way to adjust its angle at the point where it attaches to the bike. So when I was riding the mirror was too far in to see behind me. Cute but poorly designed and constructed.
Bottom LineNo, I would not recommend this to a friend