Review (3/5): Work very well... I'm ordering more!
I think these things come in very handy during summer. If you're wearing a sleeveless shirt and don't want your bra straps to show, it will hold them in place well and keep them hidden. However, my favorite way to use them is on old bathing suits that have the straps all stretched out. I use one of these, and the bathing suit becomes an X back that has renewed life in it. I like to wear old bathing suits this way to work around the yard and in my garden, with a pair of shorts over them. I originally got these two years ago for my sister's wedding, but I have since worn them many times. Yes, eventually if you use them hard they will snap and break. But they are great to have on hand. I don't find them that hard to put on. If my husband is available, I'll ask him to put them on for me once my suit is on. But if he's not, I will put then on the bathing suit carefully and then step into the suit.
Update on 8/1/11 I reordered four packages of these, which as pictured are the exact same ones I got before. What I received was a different product. I am not thrilled with the new improved version. They don't sit completely flat like the old ones did. I think I'm going to return three of the packages, or maybe all four. I'm disappointed that I didn't receive the tried and true ones that I ordered. The picture here should be updated so as not to deceive customers in the future.