Product Details:Closure Type: ZipperSize: 16.5*12*13 inchHigh Quality Material: Lightweight Polyester Canvas Which Is Soft And Durable.Package: 1x BackpackReinforced Design: Backpack reinforcement straps are ergonomically double-coated and reinforced with adjustable shoulder straps.Adjustable shoulder straps: for optimal comfort on your shoulders. Adjustable Shoulder Straps Choose the right length of shoulder straps so they fit snugly over your shoulders. Make your back comfortable.Versatility: There are side pockets on both sides of the schoolbag, which can hold water cups, umbrellas and other objects to increase portability. The double-sided zipper design can better switch the backpack.Multifunction: Laptop Backpack/Bags, Travel Backpack, Sport Backpack, Duffel Bag And Other Outdoor Activities.