Robust quality and good workmanship. Closure type bags: buckle, zipper^ Top quality and exclusive look, made of light- and weather-resistant polyester, super hard-wearing, washable, easy-care, highest wearing comfort^ Size Capacity as Laptop/School/iPad , Audio Bag Purse, Laptop Bag/Mp3 Player Protector, Ipad Compartment, Laptop ^ Height-adjustable carrying system via size scale on the back for ergonomic adjustment to any back length^ This waterproof nylon is equipped with 2 spacious main compartments suitable for A4 documents and a padded back, a stable back area and variable pockets makes the school the perfect choice