FASHION LUMINOUS BACKPACK: The best part of this stylish cool bag is after absorbing light, 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. MULTI-FUNCTIONAL: Main compartment with a laptop sleeve fits laptop up to 15.6", keep your laptop safe with strap and shockproof foam padding. 2 side mesh pocket for you water bottle or umbrella, one front and back zipped pocket can store items like cell phone, charger, keys, cards, wallet. Large capacity and lightweight. USB CHARGING PORT: With a humanized USB charging interface design, it is great to enjoy the convenient charging by connected with the portable charger and your electronic device, easily keep your smartphone full power anytime and anywhere. THOUGHTFUL DESIGN: The back of this backpack has good breathability, ergonomic design of shoulder strap and scientific reasonable weight-bearing design. Effectively relieve shoulder pressure. All these designs can leave you a more comfortable experience. ANTI-THEFT DESIGN: Theft proof combination lock and Dual-access zipper to keep your belongings safe. Perfect for going to school, work, weekend get-away, biking, hiking, camping, gym, travel, etc. Good Gift for college high school big student for boys, girls, teens, adults. 100% MONEY BACK GUARANTEE.