Someone use condom pumping method

Hi guys I don’t have enought posts that’s why I post here

Does anyone use condom pumping method ? And made some gains with that ? If so can he post some helpful routine or advices

And by how much I can exceed pressure , if I easily get discoloration ?

What is the condom pumping method?

Is it purely wearing a condom while pumping?

Give this a read, should answer your questions.

Condom pumping