Uppers: Leather or suede. Medial zipper for easy on-off. Firm yet flexible removable microfiber-covered EVA orthotic insert. Rubber outsole. Approximate measurements: Heel 2.4 H; Shaft 4.13 H; Ankle circumference 11.45. Measurements were taken using a Medium size 8; measurements may vary depending on size. Support your soles in our range of elevated styles. Vionic's versatile collection of heels wedges and boots feature advanced comfort features like a deep heel cup and enhanced forefoot contour bringing innovation and style into one transformative solution.