This backpack is made of high quality canvas with multiple convenient comparatments .The spacious main compartment offers plenty of space to hold a number of things such as laptops, books, tablet, camera, notebooks, or other important belongings for all day use conveniently. The smaller pockets are best for small accessories such as cell phone, keys, water bottle, case 1. Material: This backpack made of high quality canvas,super tough, tear resistant, scratch resistant.2. Large Capacity: 2 Size is available3.Structure:External Structure : A front storage bag Internal structure : One Main Bag One Card pocket One Card pocket One zipper bag One Phone bag Keychain4.Multi-purpose Use: You can use this bag as either a duffel style bag or backpack style bag5.Occassion: Perfect for use as hiking rucksack, outdoor travel backpack, college backpack, laptop computer rucksack, casual daypack, travel tote bag, cross body duffel bag Specification: Material: High Quality Canvas Color: Black / Army Green / KhakiCapacity: Dimensions :25L : 26x20x45CM/10.24"x7.87"x17.72" (LxWxH)35L : 30x20x55CM/11.81"x7.87"x21.65'(LxWxH)Structure:External Structure : A front storage bagInternal structure : One Main Bag One Card pocket One Card pocket One zipper bag One Phone bag Keychain Package included:1 x Canvas backpack