Outer Composition Calf Leather: 25.0%, Outer Composition Calf Suede: 25.0%, Lining Composition Rubber: 13.0%, Lining Composition Organic Cotton: 10.0%, Lining Composition Other Materials: 12.0%, Sole Composition Quartz: 25.0%, Lining Composition Polyethylene Vinyl Acetate (peva): 65.0%, Outer Composition Recycled Polyester: 50.0%, Sole Composition Synthetic Rubber: 24.0%