shoes and shoe size

If in the last 6 month you've been to a shoes shop, you'll know what I'm talking. I''m talking about shoes and their respective size. in a normal shop, you'll have, at least, 3 kind of size. ranging from US size,UK Size, Europe Size, down to the centimeter size. and the choice of brand will only make matters more complicated. for instance, I love US sizeing for no7, but somehow, nike US size is roughly it's US size minus acouple centimeter. and I quite didn't realize this in the beginning. But after acouple hours of use, it kinda creep in me. and for now, I'm kindda stuck in a awesome nike shoes(pictured above) with a wrong sizing, anyone wanna trade? my shoes number are US 7, UK 41, 40ish cm.
you know where to reach me.

UN, US, and another retrospect

been done with UN for 2 more weeks or so. And now, I'm done with US and I'm home free... not just yet...
still have to go thru the damn waiting period... approx 22 days long... I sure hope I dont have to redo any of the test...