Specification 15.6'' travel laptop backpack: Dimensions: 18 x 12 x 7.8 inches； Item Weight: 1.68 pounds； Capacity: 28L； Seperate laptop compartment fits 15.6 inch laptop; Features Spacious packing section Multiple front pockets Pen/key organization Padded ventilated back Adjustable shoulder straps Cushioned top handle Luggage strap compatible Hidden anti-theft pocket Air travel friendly Built-in USB port Internal charging cable Water-resistant polyester fabric