i ordered a size 10, a half size up for me, after some research online indicated the boots ran small, i did not find that to be the case but it did leave room to add some arch support which the boot otherwise lacks. i also found adding the padding and arch support moved my heel up and therefore my ankle and eliminated much of the gaping around the ankle i first experienced. I am 5'9, 140lbs and have about 14.75 inch calves. the boots are 16inches at the widest point and are 16 inches from the arch to the top of the boot which puts them about 2 inches from my knee and while i like the boots with jeans, I find they are a bit too loose to wear with skirts for my liking.  overall the boots are good looking and serve my purpose. they are classic riding boots and should last for years with proper care.