The MICHAEL Michael Kors Piper Sling Ballet redefines everyday dressing with a polished, wearable silhouette. This classic almond toe ballet flat is updated with a buckle-adjustable slingback strap for a modern twist, while a leather bow detail accented by the signature MK charm adds refined elegance. Polyvinyl Chloride (PVC) upper. Polyurethane (PU) lining and faux leather insole. Rubber outsole.