RF ROOM OF FASHION Women's Stretchy Over The Knee Slouchy Boots 100% Man-made Synthetic sole Shaft measures approximately 22 from arch MEASUREMENT (taken on size 6): Heel Height - 0.25"; Shaft Height and Top Opening Circumference: See Picture for Detailed Measurement by Size FEATURES: Premium vegan suede or leather. Pull on construction. Most colors are upgraded with inner partial side zipper for easy wear (please pay attention to model pictures). Flat to low heel. TPR rubber out-sole. Finished with a cushioned insole and soft lining. Designed in USA Product measurements were taken using size 6, width M. Opening circumference goes up proportionally by size.