These boots look great - much like other reviews they are a big snug width-wise when you first wear them.  Also, my heel slips slightly when I walk but I expect them to break in and not slip after a while.  I'm a size 11 and upon the first "slippage" I went ahead and ordered a 10.5 just in case but I could barely put them on - way to small - so I would advise that these are true to size.  Very happy with my boots and will post an updated review after a few months of wear.