【USB Charging Port Design 】With built in USB charger outside and built in charging cable inside,this USB knapsacks offers you a more convenient way to charge your phone while walking.Please noted that this daypacks doesn't power charger itself, USB charging port only offers an easy access to charge 【Slim Durable Travel Backpack for Women Men】This travelling back bag is made of durable waterproof nylon, good air permeability and heat dissipation with two padded shoulder straps, offers lightweight carrying and strength reinforcement, relieve shoulder pressure, and maintain cool when wearing for a long time. And it's hard, solid, and doesn't fade 【Separate Laptop Compartment Design & Practical Pockets 】One separated laptop padded compartment holds 15.6 Inch laptops as well as 16 Inch,15 Inch 14 Inch and 13 Inch. The middle compartment is roomy for daily necessities, clothing, iPad, tech electronics accessories, A4 magazines,etc. The three front compartments make your small items organized and easier to find. Two side drawstring pockets is specifically designed for the water bottler or umbrella to let you use them more convenient 【Anti Theft Multifunctional Backpack】 A luggage strap allows the back pack fit on luggage/suitcase, slide over the luggage upright handle tube for easier carrying. With a hidden anti theft pocket on the back protect your valuable items from thieves. Well made for international airplane travel and day trip as a travel gift for women 【External dimensions】16.5 "x 12.2" x 6.7 ", Capacity: 40 liters; Weight: 2.2Lb / 1KG. Serve purpose as professional work business bagsacks at office,slim fashion back pack,college school book bag, travel personal carryon for teens, adults.Recommend Age: 3+ Years Old Recommend Age: 3+ Years Old