I purchased these shoes back on 11/13/11.  I wear a size 13 shoe, but got these in a 12 so they would fit snug.  Getting them in a size 12 was a good decision.  I would recommend that anyone would go a size lower than their sneaker size.  I use these for my martial arts and MMA classes.  They are extremely comfortable and don't scratch or scuff my partners when we're practicing moves.  My only complaint is that they began to wear after about 4.5 months, and after 6 months the bottom of both shoes are worn out.  I think I'm going to purchase a more expensive pair of these to see if they last longer.  Otherwise, these are very good for my training purposes.  Will definitely buy again.