Material: Waterproof lightweight anti-scratch soft polyester, nylon lining; Durable smooth zipper quality guarantee. | Double-zipper closure with a metal puller allow it easy to open and close. This backpack is suitable for boys and girls as a casual daypack. | Dimension:12.2*7.1*17.7 inches(Length*width*high), weight:1.5LB. Roomy main compartment with three front compartment give more capacity. You can organize your tools with the differently sized pockets. | Padded back panel and adjustable thicken shoulder straps for ultra comfort and stability. Two side pockets can hold water bottle and umbrella. | Zippered main compartment internal laptop sleeve that fit for 15.6 inches computer. Front Zipper pocket provide a quick access to small item. It's big enough for 5 inch binder and 3 or 4 textbooks and a pencil pouch.