The bag is designed in an easy and functional way. There are three compartments, in the main compartment you can easily insert a worbook A4. There is an internal zipped pocket, and two externall smaller pockets. This is handmade bag, it is not a mass-production. Only three people make those bag, which make those bags really unique, high quality product. Dimension: Lenght: 35 cm, 14 inches Hight: 23 cm, 9 inches Broadness: 9 cm, 3, 5 inches Max lenght of strap: 140 cm, 55 inches. According to the contractual requirement.