Waterproof and durable: This lightweight backpack is made of reliable, tear-resistant, and waterproof polyester, effectively protecting the contents from moisture. Ergonomic design: This ultralight and portable backpack features an ergonomic design with thick, widened shoulder straps, reducing pressure on the shoulders and providing a comfortable carrying experience. Lightweight and compact: Our foldable backpack is small and lightweight, making it easy to carry. It can be folded into a sandwich-like shape and weighs no more than 80 grams, about half the weight of a smartphone. Save a lot of space. [Capacity] Unfolded size: 26 x 14 x 40 cm, 1 main compartment with a two-way zipper for clothes and snacks; 1 zippered front pocket for cell phones or easily accessible items; left pocket for water bottles or umbrellas. Versatile Uses: This foldable travel backpack offers ample space for outdoor trips, camping, hiking, day trips, school, and shopping. Specifications: Material: Polyester. Color: Dark Blue, Black. Dimensions: Unfolded: 26 cm wide, 40 cm high, 14 cm deep; Folded: 9 cm wide, 12 cm high, 4 cm deep. Weight: 80 g. Features: Durable: Our small backpacks feature reinforced stitching for added durability and a longer lifespan. The polyester material effectively prevents scratches on the backpack during hiking or climbing. Comfortable: The padded, breathable mesh shoulder straps are adjustable and effectively relieve shoulder pressure. They are easy to adjust in length and close securely. The two-way zipper ensures smooth operation. Package Contents: 2 Ultralight Foldable Backpacks.