I knew when I purchased these boots that the shaft height could be a problem (16.5in) because I'm petite at 5'3". Well I was right on my thoughts.  They are nice looking boots and the quality seems to be great but they were just too tall for me and they came up to my knee.  It dug into the back of my knee when I sat down and so I knew they weren't going to work out.  Also, the circumference is a little big if you have small calves but they have an adjustable buckle which helps out with that.  I'm still rating these boots high because they will be great for anyone who is taller. It's unfortunate that they weren't about an incher shorter.