Come and see our amazing products. This student backpack is made of polyester and waterproof Oxford cloth. The shoulder straps are elastic to prevent shoulder damage and make it easier to carry on the shoulders. The large capacity can meet a lot of books and stationery. The stylish zipper is more in line with the current young people. Ergonomic, you can choose from different colors. You can customize your logo. Pls confirm further with us if any query about packing info, inventory status and time schedule.