Rick Owens Megalace Granola Mules are slip-on leather mules defined by the signature Megalace lace detail and a sculpted granola footbed. Style ID: RP01F6817.LGYW1. Key attributes: Black | Calf leather | Treaded rubber sole for grip | Slip-on construction | Adjustable slingback strap | Leather insole | Flat treaded rubber outsole | Round toe | Megalace lace detail at vamp | Open back | Dimensions & fit: Fits true to size | Composition & care: Calf leather (upper) | Calf leather (lining and insole) | Rubber (sole) | Wipe with a soft, dry cloth. Avoid prolonged exposure to water. Use a professional leather cleaner for deep cleaning.