HIGH-QUALITY MATERIAL: The school bag has been upgraded again in terms of material and workmanship, the material is better than before, the weight has been increased from 0.55kg to 0.75kg, and the luminous light is brighter than before. Backpack Advanced Oxford fabric manufacturing, nylon, decompression shockproof padded liner. Shoulder strap and bag joint reinforcement make the bag super durable. LUMINOUS DESIGN Luminous backpack Under natural light or light irradiation, about 10-20 minutes can produce a good lighting effect. It can be kept for about 4 to 6 hours. Compared with other backpacks, it is safer to run at night USB CHARGING PORT: Boys school bags have external USB with built-in charging cable, easy charging, suitable for 15.6 inch laptop and Purchasing this Luminous Bagpacks, you can get 1 piece of internal USB cable for free. boys school bag USB school backpack children school bag girls school bag GREAT SCHOOL BACKPACKBackpack is very spacious, school backpack offers a lot of storage space, school backpack fits all folders for school. Your 15 inch laptop fits in without any problems. boys backpack school backpack kids backpack. school backpacks children backpack teenager backpack men daypacks sports backpack Is a stylish school backpack for boys, girls, teenagers, youth women, men