Great product overall. It really does boost your cup size. I am a relatively small cup size (A cup), and these really give a nice boost for a night out. They are comfortable and stay in place in side your bra (as long as it is well fitting). You can even use double sided “fashion tape” if you want extra security. The only problem I had is that you can get a bit sweaty (with all the plastic and silicone) but since I don’t wear them every day, it wasn’t a big deal.