I really wanted these shoes to fit the ad; but they didn't. I wear a regular men's size 10. These shoes were very snug but might fit if I'm NOT wearing socks. will never happen So I returned them. However, anticipating that this might be an issue based on previous reviews, I ordered another shoe in a larger size at the same time as ordering this pair. The other pair was a size 10.5 and they fit really well so I kept them and just returned this style of shoe. If perhaps the manufacturer could choose the right size, we wouldn't have to buy things in different sizes just to find the right model. I'm just saying.