(Here they are on the Fluevog web site for when the ebay listing goes away.)
I usually wear a woman's 9 or 9.5 wide or double-wide. These are a men's 8. They are a little bit too long, but with thick socks they fit well. (I first tried a men's 7 but they were a little too short.)
There's plenty of room for my high instep.
They are very cushy and comfortable.