I can't get my glans in the Pro chamber I never thought of myself as being hung but maybe a little above average After wasting several hours of trying to get myself "applied" to the Pro chamber I did think " How in the hell can anyone get their head inside of this thing unless they haven't hit puberty yet. I have a 6and7/8th inch glans circumference ,just shy of 7"when erect. As for trying to use it when completely flaccid, well that is how I wasted most my time attempting to get it in.When I'm at my smallest I still the same size as the outside of chamber and the chamber is at least a 1/4 in diameter smaller inside than outside. I did manage to get the chamber one time though. But accomplished this buy using it without the diaphragm. It took 2 and 1/2 pumps to get it in as far as would go although the bottom part of my head was still sticking out a bit,, but it did hold, it felt uncomfortable but it was working. So I thought I might be able to get use to this after a while, I only could hold out for about a hour before I had to take it off Let me tell you " Don't try doing this at home". I thought I was going to have to saw it off my penis cause it wouldn't budge. But after a few attempts of pushing air into the chamber I was able to pry myself out. But my head sure looked strange. The first half of my tip was inlonggated into the shape of chamber making my head look like a funny looking church bell.
I have emailed the Germans about this situation but haven't heard back yet. I hope they come up with something cause I was really hoping this contraption would work.