I was beginning to think I'd never find knee boots I could afford that had a narrow enough shaft for my apparently thin calves.  I consider myself "small to normal" size, and I don't have pencil-thin legs, but, until these David Tate Atlantic Boots, I couldn't find any under $200 that were narrow enough, even with leggings or skinny jeans tucked in them for my legs.  Reading the reviews of a few folks who said the shaft of this Atlantic boot was too narrow for them made me think, AHA! Maybe these .... Of course, the ridiculously low sales price and the fact that they were sold by Amazon LLC (free shipping and free returns!) meant I had nothing to lose by trying one mo' time!  So glad I did.  These are perfect for me in n 8.5 B.  (I have the David Tate Vera ankle boot in the same size and love them, too.)  Just as a point of size reference, in Clarks shoes and boots I wear a size 8.