I love these boots! I have a very in-between calf size--usually regular boots are too tight and wide shaft are too big.  These are perfect.  I think they measure right on 17&#34; as listed.  I got them in wide width because that's what was available (usually I can go either way) and I am glad that I did.  They are small enough to look flattering with a dress on my 16.75&#34; calf but they also fit over skinny jeans easily and look good that way too.  The Mahogany color is lovely and rich.  I am delighted.