900D Polyester, anti-theft multi-functional backpack. This modern backpack has a fully zipped closure, with multiple inner details including a padded laptop compartment for laptops up to 15" and a tablet holder up to 10" as well as a variety of smaller storage compartment. Designed for functionality with its waterproof layer and comfort with padded back and laptop straps, which both have a zipped hidden compartment perfect for cards and cash. The rucksack also has a built in USB connection for use with a power bank (Not supplied). The bag also opens at an angle for easy access.