Outer Composition Organic Cotton: 100.0%, Outer Composition Polyester: 100.0%, Outer Composition Recycled Plastic: 100.0%, Outer Composition Aluminium: 100.0%, Outer Composition Zamak: 100.0%, Lining Composition Recycled Polyester: 100.0%, Outer Composition Stainless Steel: 100.0%, Outer Composition Recycled Brass: 100.0%