I bought my prosthetics from an online company, ten years ago, and they are just as nice as the day I got them. They are called "Nearly Me." They are not like the typical prosthetics, as they come in a nylon (front) and cotton (back) sewn-on enclosure, and had extra sleeves to place over them. They also came with nipples that can be applied. Since they are cloth covered, they can move around, however, they don't make my chest all sweaty, either. They were really expensive, about $250.00 for the pair. I wouldn't spend that much again, but at the time, they were a bargain.
An extra tidbit, which is kind of funny... They company that made them was owned by a woman. She was the designer of the Barbie Doll. (smile)
