So, I wear a regular size nine and I ordered a size nine.  They fit...a little wide but its ok.  My toe hits the front of shoe exactly however I know that a ten would be too big.  Because the shoe is wide, it helps so I am not uncomfortable.  I didn't get any blisters or anything.  The shoe is really comfy and feels like a "Croc".  But they really do need to make half sizes.  Overall, I am keeping them. I can make it work :-)