+ 1 on take-a-look. As noted above, very sturdy. And yes, there is a mounting tab that can be glued to the inside of your helmet. I use Gorilla glue and a couple of clamps to ensure a strong bond and after that don't worry about it much. . .best mirror I've ever used. The metal hinges for adjustment are far better than plastic ball-and-socket connections or flex-wire on the others.