This stuff is simultaneously great and terrible. It’s great because it’s cheap, portable and easy to use, designed with a college student in mind. However, it seems like something that wasn’t tested thoroughly at all before being put into circulation. In any temperature above like 70 degrees fahrenheit, the stuff just ceases to stick to my posters (see the fact that there is no poster here, it’s fallen under my bed). So it’s great sometimes, but very unreliable, and half the time I need to just go buy a better way to hang things anyway.