ibagbar Canvas Backpack Travel Bag Hiking Bag Camping Bag Rucksack Gray Large Main material: 90% High density cotton canvas 10% PU Leather, it's a very durable backpack. Structure: 1 Main zip pocket, 2 front zip pockets, 1 side mesh pocket and 1 laptop compartment. Dimension: 11.5"L x 18"H x 7"W(Normal size), 12.5"L x 20"H x 7.5"W(Large size). Normal size can hold most 15 inch laptop and the large size can hold most 17 inch laptop. Multi-purpose uses: This bag can used as duffle/handbag/suitcase/brief case when travelling. Two durable straps are in a hidden compartment to make this bag a backpack/rucksack/satchel. A detachable shoulder strap can easily turn the backpack into a messenger bag/crossbody bag/mail bag/shoulder bag. One bag offers at least three different ways of carrying. Warranty: All of our bags have 1-YEAR WARRANTY(Replacement or Refund). Any quality problems with your bag, please contact us, we will solve it.