I saw the amazing price that Amazon was offering and had to get these but I knew they would fit well since I already have them in black.  I tried on knee high boots from a lot of different brands and none of them fit until these.  My calves aren't that thin so that was the issue but also because a lot of other popular boots looked plasticky and cheap even though they were leather.  These, however, look amazing.

When you first put these on, they will feel slippery and super stiff.  I wore my black pair about 3 or 4 times and told myself that they're too uncomfortable and left them sitting all winter and then I had to wear them to complete the look when it dawned on me that they're really comfortable all of a sudden.  So, don't be afraid to get these.  They fit my somewhat big calves and are very comfortable after 5 wears.  Granted I live in NYC and have walked in them a lot more in 5 wears than those with cars, but really, these boots will last a life time so make the investment.  I like to use leather honey and put tabs on the heel as not to wear them out too fast.