Anyhow Canvas Casual Backpack Hiking Backpack Vintage Rucksack Daypack Sports Bag for Men Travel Climbing Camping Hiking Perfect Combination of canvas and PU leather, Angular Appearance and Soft Hand Feel,very durable. This High Density Canvas Backpack Features A Classic Shape With Several Pockets For Storage And Organization; Ample Interior Room Accommodates A 17 Inch Laptop even a 17.7 Inch keyboard for the computer. This Rucksack Has 1 Main zip pocket, 2 front zip pockets and 1 side mesh pocket. For Valuable Items And Two Side Pockets With Button Closure Overall Dimension: Approx 12"L x 18"H x 7" W. It's about 30 L. It can fits 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.