Casual Travel Backpack 15.6" with Hidden Compartment and a 600ml Sport Bottle as Gift canvas Imported Zipper closure Dimension:18*12*7inches. Canvas fabric with excellent texture. Features Patterns of Black and Gray Breathable designed Panel supports your back comfortably. Large Capacity:Two Compartments,Multi-Small Pockets.It can accommodate 15.6inch laptop,iPad. Anti-Theft Zipper:Dual zipper layers, incomparable smooth when use it.