20cm

Features:1>.100% New and high quality. 2>.USB Charging Port: This backpack has external USB port . You can connect your cable to your power bank and your cell phone,it is convenient for you to charge your cell phone anywhere in your hands. But please note that the power bank or cable is not included. 3>.Luggage Strap: A convenient luggage pass-through fits over most rolling suitcase handles making commuting and traveling easier. 4>.Numerous and Large compartments:There are zipper numerous compartments to not only hold your laptop, but also your credit cards, phone, Ipad, water bottle, sunglasses, books and so much more.With this backpack,you can commute to work or stack in a semester's worth of schoolbooks. This backpack is large enough for your laptop, files, notebooks, heavy textbooks, power bank, clothes and necessities, etc. With side pockets,you can hold your umbrella, water bottle, small accessories and more. 5>.Adjustable Shoulder Straps: Shoulder straps can be adjusted and its padded design gives you the greatest comfort when taking heavy items. 6>.Breathable Mesh:The breathable mesh cloth on the back keeps your back dry continuously and effectively reduce back sweating 7>.Convenient Design: A hole in the travel laptop backpack is used for the outside of the earphone, which can be used conveniently. 8>.Wide Application:It’s perfect for Business traveling, weekend getaways, school, shopping and other outdoor activities in daily life. The large backpack owns 3 spacious compartments-one separate laptop compartment that fits 15.6-inch laptops, and one main compartment roomy for daily necessities, such as clothes, notebooks, etc. Package Included: 1* Backpack