Nathan-Baume Grease is a slingback mule from the Nathan-Baume collection, designed for versatile day-to-evening wear with a flat silhouette and heel strap. I searched for product code 153727 together with Nathan-Baume but did not find a definitive product page; material composition, exact model confirmation, and dimensions could not be verified and are left blank. Key attributes: Blue | Jeansblauw | Slingback strap | Mule silhouette | Slingback style