I ordered a pair of these in sizes 10 and 10.5. I'm usually between 10 and 10.5 so I wanted to see how things were going. The 10's were a little big and a little narrow, but the 10.5's fitted perfectly. If you're deciding which size to order and you're between two sizes, it's safe to go up a size as they still fit snugly but are a bit wider and more comfortable.