Ill have you know that I used an indisputable scientific method to measure it. I put my size 13 (47 for you Euros) sneaker up next to it twice, and there was a little more tail hanging past, to reach the size estimate.
Seriously though, I wasted 5 minutes juggling the picture from my phone, to Dropbox, to email, to the forum, only to see the forum wont accept a .JPG