I've been told that some expanders can go EIGHT times their rating. But that's just what I've been told.
Just thinking of Mary at 6K is enough to make me lightheaded, much less bigger!
: )
Gotta love those shoes!
The tension breakpoint is somewhere between +500% to +800% of the original volume. There are statistics out there in the internet. But honestly, I wouldn't want to try the +500% or above. There is one company in France the inventor of saline implants. They have a certain technique to crosslayer the silicone polymere structures and have an additional +200% tension break point. Anyway there is even other material called Bio-Rubber that has an even higher tension break point then silicone shell material has.
Not knowing precisely what the material of the implant is but assuming she could possibly go to 30,000 ccs or even ( gasp ) 48,000 ccs

, It seems the main limiting factor would be the flexibility of her skin and its ability to be able to expand without suffering necrosis. Mary is quite lean and in fine physical shape and her body looks quite strong so the weight issue she could probably safely handle 15K. After that, because her body fat looks to be in the low side, I don't know if the skin could safely expand to beyond such a size without getting too thin, having circulatory problems and suffering necrosis. These ladies, you have to truly appreciate them because what they do is potentially quite dangerous to their health.