Multi-function Backpack:Front zipper pocket , Inner small pockets ,Side pockets,Reinforced edges and steel frame of the main compartment keep the perfect shape of the bag and durable of usage.
Casual Backpacks USB port and headphone jack design: the built-in USB port can easily charge the phone through the connected mobile power supply. (Excluding power bank) The headphone jack design.
Waterproof Book Bag Safe&Convenient: A luggage strap allows backpack hook to luggage / suitcase, slide over the luggage upright handle tube for easier carrying. Custom-fit padded shoulder straps for a more comfortable fit.