100% cowhide leather ballet flats. Adhesive strap closure. Flexible insoles and 100% sheepskin leather lining. Soles in 100% cowhide leather. LEATHER: The material used to make each product has its own unique features. Any possible markings or color variations are signs of the authentic nature of the leather used. STARFIT® TECHNICAL INSOLE FOAM: Flexible technical insole made with polyurethane foam. Comfort, cushioning, and durability.