FASHION LUMINOUS BACKPACK -- The Printing part of the school bag exposed to light, glow at night and keep about 4-6 hours by absorbing light in the day about 10-20 minutesPerfect Birthday Gift -- Backpack fit for boys, girls, women, men, youthLIGHTWEIGHT, HIGH QUALITY SHOULDER STRAP -- Anime bags are made of wear-resistant nylon fabric and heavy-duty inner lining, Besides, the Shoulder belt made of honeycomb dampness breathable material, make you comfortable carrying, no tiredUSB Charging -- This laptop bag has external USB port with built-in charging cable, convenient for you to charge your cellphone anytime and anywhere without opening your laptop bag.