ESSEX GLAM Womens High Stiletto Stretchy Over The Knee Thigh High Boots Synthetic sole Shaft measures approximately Approx 23.5 Inch / 58.75 CM (Heel Not Included) from arch Calf Circumference approx 14 Inch / 35 CM (Without Stretch) Boots Height approx 23.5 Inch / 58.75 CM (Heel Not Included) Heel Height 4.25 Inch / 10.6 CM Boots Circumference approx 17 Inch / 42.5 CM (Without Stretch) This style is labelled with UK/EU size but this will be equivalent to the US size ordered. E.G US5/UK3, US6/UK4, US7/UK5, US8/UK6, US9/UK7, US10/UK8, US11/UK9