The back part provides comfort thanks to its sponge. water-resistant, long-lasting and tear-resistant fabric. 3 zippered compartments - 1 mesh side compartment you can easily carry all the items you need in many areas such as middle school, high school, travel, hiking. middle school high school backpack with back support. flask compartment, with lining in the sole. height 47 cm, width 32 cm, depth 20 cm. water is not included in the product! the bag weight is 620 grams. note: the design is a patented product. 100% domestic production our product is exactly the same quality and color as seen in the picture, no action has been taken on it. we carefully examine our products to see if there is any problem and we pack them carefully in line with the preference of our valued customer. it is sent to our company with its special packaging. send us a message for any questions you may have. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.