Let me start off by saying these boots are AMAZING! They feel like TANKS on your feet. Superb quality and the styling is also very cool. The only BIG problem I have with them is the sizing is completely OFF, they run SUPER SMALL and are narrow. I'm 5"8, 220 lbs, stocky build, I normally wear a size 8 sneaker/shoe, for these to fit normal/comfortable with NORMAL socks, I had to go up a size and a half and get a size 9.5! I daresay that if you want to use extra-thick winter socks, you'd have to go a full 2 sizes up your regular size! But given they're so padded/insulated, regular socks should cut it just fine. Also, they run narrow so if you have wide feet, they'll be very snug.