Suede upper. Mary Jane strap with adjustable buckle. Buckle strap detail. Fabric lining. Synthetic outsole. Approx. 0.25'' heel height. Size 6 is EU 37. The Lucia Suede Buckle Hardware Mary Jane Ballet Flats are a chic take on a classic. Suede upper, adjustable Mary Jane strap, and delicate buckle detailing make them versatile for day-to-night looks. Style with a flowy midi dress or tailored trousers for a polished yet playful finish.