Gosh are these boots perfect! They have a low heel making them super comfortable, they have an adorable buckle on the heel and a side zipper that allows the width of the calf to be opened. The boot also features an elastic area that also allows for easy on and off. Full zip on the inside of the foot. 

Top of boot circumference: 6 inches // with extender unzipped: 6.5 inches

True to size.