This large capacity backpack specially designed for elementary school students in grades 3-6 features scientific compartment organization The main compartment easily accommodates A4-sized textbooks and notebooks, front pocket includes stationery storage area, side mesh pockets conveniently hold water bottles and umbrellas Supports personalized text and logo customization service, can print student names, class information or school logos, both practical and commemorative Ergonomic back panel combined with thickened breathable shoulder straps effectively reduces shoulder pressure, S-curve design fits the back perfectly, protects spinal health development Selected high-density waterproof nylon fabric offers excellent wear resistance and tear resistance, withstands daily use challenges Available in seven popular colors: blue, purple, black, pink, gray, beige, light purple, each color comes in standard and small bag versions Reflective strips enhance nighttime walking safety, reinforced bottom wear-resistant panel extends service life, making it an ideal learning companion for children's growth