Stretch upper to fit most leg sizes Reinforced on top with a silicon strap to ensure no slouching Zipper for ease of getting on and off 4-way stretch patent 4 inch heel height Size 6 measurements: 16.5 inch shaft top circumference, 23.5 inch shaft height Size 8 measurements: 17.25 inch shaft top circumference, 24.5 inch shaft height Size 10 measurements: 18 inch shaft top circumference, 25.25 inch shaft height Synthetic upper material Textile lining Vegan leather sock Synthetic sole Imported