This super durable USB Charging Luminous Anime Cartoon Backpack is made of high quality oxford fabric and polyester lining that is comfortable and wear-resistance. Its main compartment has a laptop sleeve that fits laptop up to 15.4" with two side mesh pocket for you water bottle or umbrella. It has a theft proof combination lock and dual-access zipper to keep your belongings safe. Enjoy the convenient charging by connecting with the portable charger and your electronic device. After absorbing light in the day about 10-20 minutes, you can see the fluorescent effect in the dark and can keep about 4-6 hours. Perfect for cool teenagers!