Backpack in Buffalo leather. The leather has been re-tanned with vegetable extracts. Each bag is a handmade unique item that can vary slightly in color as no two hides are the same. The rugged vintage character is achieved by treating the skins with waxes and oils. Each design will get a nice patina over time. It should be noted that the wax can infect light fabrics until it dries out. FUHRHIDE cannot be held liable for stained clothing. Buffalo leather is smooth, very strong and durable. Handmade from 100% buffalo leather The inside fabric is made of 100% polyester. We only use quality zippers from YKK . The bag comes with a handmade dust bag. To enjoy your bag for a long time, we recommend using it for storage. Your bag is best stored in a dry place away from direct sunlight.