UGG Kids Womens Butte II (Little Kid/Big Kid) Leather^Linen^Wool Boot opening measures approximately 9" around A pint-sized version of an UGG&reg; favorite. Waterproof leather upper with a wool linen shaft above the leather. Reinforcing panels at heel and toe. Lace-up closure for a perfect fit. Cotton laces with plastic eyelets. Foldable collar can be worn up or cuffed down. Warm faux-fur lining. Padded insole. Flexible rubber outsole. Imported. Measurements: Heel Height: 1 in Weight: 7 oz Circumference: 9 in Shaft: 7 1&frasl;2 in Product measurements were taken using size 13 Little Kid, width M. Please note that measurements may vary by size.