I have Asics running shoes size 9.5", and it fits perfect.  I read the other reviews & ordered the size 10.  They do run small.  It's not so much about the length, but I find the overall fit is very tight.  Strings are definitely too short.  Do-able, but should be longer.

I've yet to wear them outside, but I wanted to warn people out there about the fit.  I will update this review after actually wearing them.  They look fantastic.