Hi, It seems to be a reasonable product, speaking as a mechanical engineer, I think the straps (and their connection) may become the weak link over time. If you cannot shave your chest to apply adhesive any of the other silicon forms become a "stay put" problem if your at all active. Even a good bra can let silicon forms move around (embarrassing) or worse yet fall out of your bra ( REALLY embarrassing - yes this has happened to me - thank goodness I was wearing a tucked in shirt and a ladies room was nearby) so if you're not in a position to apply adhesive and your planning to be outside the home, these seem like a good idea for occasional use. I would still wear them with a supportive bra to keep all the weight and pressure off the built in straps. If you buy them let us all know how they work out!