Backpack Information-Dimensions: 29x 14 x 44 cm-Ergonomic design: The adjustable ring-type adjustment buckle is used to freely adjust the length of the shoulder strap, reduce the weight burden, effectively protect the back and shoulders, and make your life more comfortable.-High-quality materials: made of polyester fabric, easy to clean and very durable. The zinc alloy zipper has undergone 500 repeated tensile tests to ensure the safety and durability of daily use.-Large capacity: easy to carry notepads, card readers and a pile of other items, pens and pencils. There are separate pockets inside, which are convenient for carrying a laptop. There are two pockets on each side for storing water bottles, umbrellas and other items.-Applicable occasions: suitable for school backpacks, daily use, short trips, etc. A large backpack suitable for school, work, sports, travel, hiking, shopping, camping or other outdoor activities.-Product warranty: If you have any questions, please feel free to contact usSuitable for teenagers, men and women.Suitable for school and outdoor use.