LAPACKER Lightweight Slim Business Laptop Backpack for Men Water Resistant Computer Backpacks 17 Inch Traveling Bags Blue Multi-pocketed : Front section has 2 small pockets , 2 Inserted pen pockets and extra space to provied all kinds of stuff tidy. Main compartment has one zippered pocket for wallet, two small pockets for cellphone and Portable Charger, and one pocket for Ipad, and still had plenty of room to hold books, clothes, lunch,etc. Two sides pockets can extend, pull down the zipper there are elastic Mesh pockets in it. Anti THEFT -- 2-ways anti-theft dual zipper , anti-explosion , hard to be poked by knife / ball pen; Hidden laptop solt can hold a 15.6 inch laptop or some ultra-slim 17 inch laptops, well padded, protect your laptop safe. On the buttom of the back there is a zippered pocket keep your valuables hidden. THICK PADDING : Adjustable shoulder strap & Air mesh back panel make you comfortable and breathable. Water-Resistant laptop backpack is made of suiting fabric, easy to clean and velvety texture.