Main material:nbsp;oil wax leatherComposition ratio: 90% polyester, 10% spandex / 40% polyester + 45% polyurethane + 10% wood powder + 5% others / 20% polyester, 80% cotton / 45% polyester + 25% powder + 30% polyurethanenbsp;Internal structure: 1 pocketnbsp;Backpack style: Handheld / Shoulder bagnbsp;Dimensions: 45cm x 25cm x 13.5cmnbsp;Wrist height: 20 centimetersnbsp;Capacity: Can accommodate a 12.9-inch iPad Pro.nbsp;Other: Net weight 617.2 grams