Rick Owens Concordians Mule Granola reinterpret the brand's sculptural, minimalist aesthetic as a slip-on mule. The open-back silhouette is paired with a covered granola and rubber sole for a bold, architectural look. Key attributes: Black | Groppone cow leather | Open back | Slip-on | Sculptural, minimalist upper | Covered granola and rubber sole | Ridged sole | Composition & care: Outer: Calf leather 100% | Lining: Calf leather 100% | Sole: Rubber 100% | Leather treated with natural vegetable waxes; may show natural markings and shading.