These boots are great because they can be worn with jeans and even with casual skirts.  My calves are wide (~ 15 inches) and these boots (size 7) fit comfortably over skinny jeans, though the fit is too snug to tuck any other type of jeans.  The adjustable strap at the top does nothing for me because the seam where the leather and suede meet is fitted and can't be stretched.  Though the shoes have a rubber bottom, the traction isn't that great in the snow/ice, but these shoes aren't really insulated for cold weather anyway if you are going to be out for a length of time.