Upper: Leather or suede. Adjustable hook and loop closure to ensure perfect comfort and fit. TPR insole for added cushioning and longevity. Outsole: Durable synthetic rubber. Heel Height: 2.5 Support your soles in our range of elevated styles. Vionic's versatile collection of heels and wedges offers advanced comfort features like a deep heel cup and enhanced forefoot contour bringing innovation and style into one transformative solution.