BANGE Laptop Backpack for Men BANGE mainly focus on the development and design of men's business backpacks, our products include in travel backpack, laptop backpack, business laptop, casual backpack, sling bags and so on. We are committed to integrating modem technology in a personalized, sustainable and safety way, to create a quality and appearance coexist products . Per this upgraded version, it has below advantanges. Anti theft TSA customs lock, it's very safety in your journey, and you will not worry about lost your valuable item.USB3.0 fasting charging port will meet your urgent charging requirement during your business trip, you only need to put your own power bank in the backpack.Waterproof oxford materials and waterproof zipper, which can prevent the water coming.Fashionable design and you can use for different occasion, such as business, leisure, travel, and daily. HOW TO USE TAS LOCK Open the lock(the original lock is 0-0-0)and release the zipper headsPress down the reset button with a tool such as a Pen until hear the "Click"Set your number combination by turning the dials（for examples:8-8-8）Push the button to the open position and let reset button back until hear the "click" sound 3.0 USB Charging Port USB3.0 can charge your phone quickly, and will not affect your working or import things. Water Resistant Oxford Water repellent laptop rucksack , prevent your laptop or other electronic items from getting wet ,as well as keep away from filth or dirt. Waterproof Zipper BANGE use high quality waterproof zipper, which will prevent your electronic items inside. Luggage Strap Luggage strap is suitable to be placed on various suitcases convenient for your travel and business trip. Hidden Bottle & Umbrella Pocket There is one hidden side pocket to hold your bottle or umbrella. You also can put your items, easy to take. Comfortable Ventilation Soft air permeability padded back cushion shoulder straps make it light and comfortable.