Blowfish Women's Frost Engineer Boot Polyurethane Rubber sole Shaft measures approximately 17" from arch Boot opening measures approximately 15" around Fall in love with the Frost boot this season to complement all your favorite outfits! Man-made upper. Rear zip closure. Decorative harness straps at ankle. Textile lining and insole. Synthetic outsole. Imported. Measurements: Heel Height: 1 1&frasl;4 in Weight: 2 lbs Circumference: 15 in Shaft: 18 in Product measurements were taken using size 9, width M. Please note that measurements may vary by size.