Silk. Top quality Miu Miu ballet flat shoes for spring and summer. Brand new super beautiful ballet shoes. Original version. One-to-one development. Fashionable ladylike temperament. The instep is elastic and strong. Very convenient to put on. Upper: imported silk foot pads/lining: imported goatskin. imported cowhide from Italy. Bottom Size: 35-39. (4 yards and 40 yards customized),