Best trail shoes I have ever owned.  Purchased them to compete in a Tough Mudder and could not have been more pleased.  When everyone was slipping down the muddy inclines, I just dug the treads of my Kinvaras right in and walked right up.  The other reviewers are correct, the fit is definitely a bit slim.  When I first put them on I thought it might be too tight, but after just a few minutes they felt perfectly comfortable.  But if you have wide feet, I don't think you'll be able to wear these unfortunately.  If you have average width feet, and like a form fitting, snug fit, these shoes are amazing.