"I purchased these after trying and returning the ankle high ones. I had to return those because they were SOOOO narrow. I was a little concerned about these but these are perfect! I'm a size 9 and these fit true to size. PLENTY of room in the calf (my calf measures 15.5") I have the top completely closed and still room in calf. These would accommodate a pretty muscular calf. VERY cute, can't wait for it to get a little cooler to wear with my skinnies"