Outer Composition Calf Leather: 20.0%, Lining Composition Recycled Polyester: 100.0%, Outer Composition Calf Suede: 80.0%, Sole Composition Silica: 27.0%, Sole Composition Rubber: 40.0%, Sole Composition Synthetic Rubber: 7.0%, Sole Composition Recycled Rubber: 10.0%, Sole Composition Other Materials: 16.0%