I was very nervous about these boots but took the leap, so glad I did!
They are wide calf, BARELY. I have muscular calves (16" at the widest) from years of speed skating, and I thankfully have long legs.  I have a really hard time finding cute tall boots that are tall enough AND allow enough room for my calves. These fit the bill! The come almost to the bottom of my knee, and fit my calves comfortably. There's no extra room when I wear them with skinny jeans tucked in, but the goring on the sides keep them snug but comfortable. They're not too bunched up at the ankle, much better than a lot of wide calf boots.
Best boots I have tried, I don't regret this purchase at ALL!