When I first got these, the left shoe was significantly smaller than the right, but after about a week of breaking it in they are finally comfortable. I would definitely purchase these shoes again, but probably not online, mostly because of sizing issues. If you can't go somewhere to try them on, you should probably buy up to a full size smaller than you normally wear. Don't worry if they are tight, they stretch. I bought a full size smaller and they fit perfectly after breaking them in!