??Quality Material of JOYHILL Backpack??Made of lightweight, durable and water resistant fabric with metal zippers. Ensure a secure & long-lasting usage everyday. ??USB Charging Port Design??USB interface with built-in cable, great convenience for charging your electronic devices via connecting your own power bank. ??Functional & Safe??A luggage strap allows backpack fit on luggage, 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. ??Large Capacity??One separate laptop compartment fits up to 15.6 Inch Laptop as well as 15 Inch, 14 Inch and 13 Inch Macbook/Notebook. One spacious main compartment fits books, lunch, light clothes and school supplies or travel accessories. Front compartment provides organizer pockets for key, pens, pencils and cell phone. Two retractable pockets at side for water bottle and compact umbrella. ??Multipurpose Daypack??Stylish professional office work bag, slim USB charging backpack, a good choice for daily commute, business travel, college rucksack bookbag, laptop backpack etc.