I spend a lot of time driving with my windows down. I also generally have a notebook sitting next to me. I bought this money clip to keep my notebook pages from flying all over the place during such drives. Honestly, it is doing the job just great. The material is a little bit flimsy and I have managed to bend it to shape better around my notebook. While that is not bad for my use of it, I can imagine how you wouldn't want a money clip to be quite so malleable. Overall its strong enough, you just can't stress it by over stuffing it with anything.