Product description features:I think this is also a very good schoolbag for students who are about to start school, he can hold a lot of books.Ideal for gyms or sports activities: This bag can be used for gyms, sports and swimming activities, with enough space for shoes, swimsuits, floats and pumps.Ideal for travel: You can carry this bag with you, this size is perfect for traveling. After the zipper at the bottom is opened, the bag can be enlarged to provide more storage space. When you don’t need it, you can also retract it as a backpack for daily travel.Waterproof nylon fabric: This bag is made of nylon fabric, which is a waterproof material that keeps your items dry[Packing]: 1*travel luggage bag【Notice】1. If you have any quality problems, please don't worry, please contact us. Please be assured that we will help you solve it.2. Due to different measurement methods and tools, there may be errors in the measurement results. Dimensions are for reference only.