I purchased these to pin to a bulletin board outside my office so people could leave me notes if they stopped by. I used a thumbtack to pin the backing to the bulletin board so there wouldn't be a lot of paper litter as with a spiral bound notepad. Within a couple of days before anyone had touched it the paper fell off the backing (in one nice bunch at least).
3"x5" Pads are strong and the pad stays together until you pull each page off. The best we've found. As plumbers we take notes all day long and these hold-up! Thanks Staples.