I bought these at Target. The idea is ingenious-theyre like a small pin attached to a small bobby pin. You just pin it to the shoulder seam and then after you put your shirt on you slip the bra strap into the bobbie pin. I had two issues. One is that they are too narrow to hold the straps of my favirite bra style. I am bigger busted and so cant wear the the bras with narrow straps. The second issue is my own problem. I broke several because I forgot I was wearing them and pulled my shirt off over my head. Since the shirt was sort of attached to my bra, because my bra was in the bobby pin part, the things broke. If you wear bras with the smaller straps which I think many would consider the norm, and you are careful, these will work great for you.