I normally wear a 6 1/2 and have very skinny, bird legs.  I read the reviews that this boot ran small and so figured that a 7 would be fine.  But, even with no thick socks on, the 7 was so tight that I had trouble getting it off and the top of the boot over my arch was very painful.  I sent the 7 back and got a size 8 and it fits well.  The top of the boot over the arch is still snug, but not painful.  The shank of the boot fits very tight to my skinny legs.  I don't have room to put my pants inside the boot.  And if you have normal size legs, then this boot may not fit your leg.  I would suggest measuring your calf before purchasing this boot.  The boot is very well crafted and I love it, just the sizing could be more accurate.