Composition: 100% Lamb Leather. Lining: 50% Cotton 50% Viscose. We are a member of the LWG (Leather Working Group) to support and contribute to best environmental practices within the leather industry. All of our zippers are NATULON® ZIPPER which is an environmentally friendly product that is manufactured with post-consumer PET bottles. For labeling and packaging, we only use fabrics and papers. Model: DD40005