The Osprey Arcane backpack is made of 420D recycled nylon with a TPU finish for moisture resistance. It has a 25L capacity, a roll-top closure with a metal hook and a waterproof zipper. It includes a removable 'work basket' for 16" laptops, a document compartment and an organizer for small items. The AirScape back panel and foam padding provide comfort when carrying. It has a removable hip and adjustable sternum strap.