If you're looking for an economical and lightweight foldable backpack, this is what you want. It is made of the 420D polyester material, which is waterproof, durable and wear resistant. The large main compartment with smooth double zipper puller on the top, can hold everythin you need. Two sturdy mesh pockets on the side for storing water bottles and umbrellas when you go out. Two padded shoulder straps in the back relieve shoulder pressure and free your hands to feel comfortable. You can also fold it into a samll bag. QTY over 2000pcs, the price will be include sea freight. Pls order today!