External Usb Port With Built-In Charging Cable Conveniently Charges Your Phone And Other Electronic Devices (Pls Provide Your Own Portable Charger). A Hole In The Travel Laptop Backpack Is Used For The Outside Of The Earphone, Which Can Be Used Conveniently. Besides, The Large Laptop Backpack Has A Sturdy Handle With A Steel Cable On Top For Easy Portability. Side Compression Straps Keep The Exclusive Pack In Any Size You Need. Durable Material: Made Of Water-Resistant And Durable Polyester Fabric, And High-Density Nylon Lining For Better Tear Resistance, The Heavy-Duty Backpack With Metal Zippers Ensures Daily Long-Lasting Use. Serve You Well As A Professional Office Work Backpack, And Large Usb Charging Backpack. An Ideal Present For Back To College, Graduation, Parents, Thanksgiving, Christmas, Valentine'S Day. Backpack Has One Separate Laptop Compartment That Can Hold Any Laptop Up To 15.6 Inch. It Also Has One Spacious Compartment For Storing Any Item Like Daily Necessities, Tech Related Items, Accessories, Toiletries And Many More. The Front Compartment Comprises Of Many Pockets, Key Hook To Store Your Item In An Organized Manner And Easier To Find. This Backpack Has External Usb Port With Built-In Charging Cable Offers Convenient Charging Your Cellphone By Connecting Your Own Power Bank. The Headphone Port Outside Gives Easy Access To Earphone Usage As Well. The Outer Dimensions Are 17 X 12 X 6.5in（43 X 30 X 7cm）And Made Up Of Water Resistant 300d Outer Nylon And A Protected Soft Cushioned Inside Give Exceptional Sturdiness And Longevity. The Tough Materials Will Withstand Ripping And Abrasion, Ensuring A Long-Lasting Use. It Can Also Carry Your Equipment Like Water Bottle, Tablets, Journal, Pen, Cellphone, Etc.