I was concerned about the sizing based on other reviews but I usually take a size 9 so I ordered a size 9 - and they fit perfectly. The toe box is roomy, which actually helps keep your feet warmer - too-tight boots don't allow for enough air to circulate and your feet get cold.
The tread is nice and grippy, too.
Only thing to know is that they are kinda bulky to drive in...but that's not really what they're for anyway. For tromping around outside in the snow and cold, these are excellent.