Replacement strap Exactly that. It’s the same strap except a little longer than was on my light originally. Just cut it to length hopefully it lasts the same amount as the old one.

The part does exactly what is needed to hold the taillight onto my rack. It is a simple and easy replacement. Unfortunately, two of them have already torn and I'm now on my third strap. I think that "durable" in the description is not quite accurate.