Suede ballet flats in 100% split cowhide leather. Side buckle closure. Flexible insole. Rubber sole. SIZE 40: Shoes available in size 40. LEATHER: Made with high-quality leather. Any wrinkles or irregularities are natural characteristics of the leather, making each piece unique. STARFIT® TECHNICAL INSOLE FOAM: Flexible technical insole made of polyurethane foam. Comfort, cushioning and durability.