I had some studs lying around from a diadem I bought from Forever 21 that I didn't use. I decided to go ahead and use them on my vest shoulder. They're really easy to use, you just make a whole and screw them in... pun not intended! I like them because they're easily taken off and reusable, however it's sad that I need to either order them of rip them off a diadem to have some. We can't buy them here since they're not something that sells, pity.