I am a 9.5 and ordered a 10 in this boot. They are too tight. I need an 11. I never wear an 11 in any boot, in these I do. I ordered these in the Black PU and they are so hot! I also found them easy to walk in because of the platform. I have a pair of over the knee boots (4,5 inch heel, no platform) and these are much harder to walk in. Very pleased with these boots other than they ran too small.