1. Durable Material: This Stylish Laptop Backpack Is Made Of High Quality Waterproof Polyester Fabric; Size: 31Cm*4Cm*46Cm2. Multifunctional Compartment: Separate Compartments And Pockets Are Designed To Provide Ample Space For Your Computer, Ipad, Power Bank, A4 Documents, Wallet, Pens, Cards, Clothes And More. Carefully Padded Padding Protects Your 17.3" Laptop. An Rfid Pocket With Id Protection Protects The Date Encoded On Most Ids, Credit Cards And Passports.3.Usb Port And Headphone Jack: The Built-In Usb Port Is Convenient To Charge Your Phone With A Connected Power Bank. (External Battery Not Included) With A Headphone Jack, You Can Easily Listen To Your Favorite Music.4. Functional And Safety: The Luggage Strap Is Very Convenient To Fasten The Backpack To The Luggage Cart, Making Your Travel And Commute Easier. The Back Air Circulation Padding System And The Back Secret Pocket Are Designed To Keep You Comfortable And Safe On The Go.5. Durable And Comfortable: This Practical Backpack Is Large And Durable, The Backrest Is Well Padded, Reflective Stripes, Adjustable Shoulder Straps And Sturdy Handles Make It Comfortable To Wear For Long Periods Of Time. Perfect For Study, Travel, Business, Daily Life And Outdoor Activities.