Material: Oxford cloth. Durable, lightweight and waterproof. The backpack is stable. Ergonomic design and superior breathable, comfortable to wear. Multi-pocket design helps you put things in the bag systematically. This computer bag fits up to 15.6 inch notebook/MacBook/books/lunch box all. Multifunctional: The backpack has 1 main compartment with fastening straps for 15.6 inch laptop and iPad. 1 middle front pocket with zip for documents. (It also comes with 2 open pockets and 1 zip pocket, 2 pen bags. ) There is a large compartment for books or lunch boxes etc. (there is also a mesh pocket inside. 3 small front pockets for power bank, pens, cards. 2 side pockets for water flat, umbrella, etc. Comfortable design: Padded back and carrying straps, and do even body parts a favour, but also inside the backpack - especially the base - the padding soothing. The straps between the inner compartments stabilise e.g. laptop and books and ensure that not everything flies around. In addition, there is a fixed rope with buckle that prevents the shoulder strap from slipping.