I bought these specifically because they said wide calf in the reviews...there should be exact calf circumference in the description however.  My calf is a 15 so I usually look for a 16 for comfort and the ability to tuck in some not-so-thick pants.  I can barely zip these over my calf even with ankle-socks so they are perhaps a good fit for a 14-15 inch calf circumference.  I will try them one more time with a pair of control panty hose and if they still don't fit right I may have to return them, which is too bad because they are beautiful boots, very comfy even without padded inserts (I did buy a half-size larger so I could insert some Dr. Scholls or other comfort inserts).