These run really big. I ordered a size 10, one of my feet is a true 9.5 and the other is a true 10. 
The size 10 was a size too big on my size 10 foot, so I returned for a size 9 (no half sizes I guess). The 9s fit great even on my larger foot. They are super stiff at first and take some time to break in. The buckles are the most difficult at first. They are breaking in nicely. My 13 year old 90s inner self is so excited to finally have a pair. I love them but I took off a star because I had to return and reorder another size which was annoying.