Madewell The April Ballet Flat In Warm Sand New With Defect- Slight Dirt Marks On Right Shoe True everyday classics, these leather ballet flats are finished with tonal grosgrain trim and a bow on top. Upper: 100% leather. Lining: 100% leather. Sole: 79% rubber (31% of which is recycled, 25% of which is synthetic, 23% of which is natural), 21% calcium carbonate. Size 6