Durable Material:The black laptop backpack is made of Oxford cloth, water-resistant, metal zipper, double zipper,trolley case fixing belt, black bookbag with USB Charging Port Multiple Pockets: solid color school backpack with USB Port. Size:12.6"L*5.5"W*17.3"H. computer backpack fits 15.6 inch laptops.You can sort your items in the compartment of the front pocket. 2 hidden pockets to store your wallet. And there are two side pockets, so you can storage your bottle and umbrella. Travel Backpack: Luggage strap allows backpack fit on handle tube of luggage/suitcase, free your hand&shoulder while travelling. Breathable mesh shoulder straps help to relieve the stress from your shoulder. It's also served as a carry on bag for flights and well fit under an airline seat. Application: Cheap and good quality backpacks can be used as 15.6 inch laptop backpacks, University backpacks, college backpack, teenager backpack, high school schoolbag, hiking backpacks, middle school backpack, daily work backpack, business travel backpacks for men and women. Backpack Gift:You can use it during travel, college school,high school, middle school business activities. It is suitable for both men and women, so it is a perfect gift for wife/ husband, friend, teenager, teacher