This ingeniously designed travel backpack comes with a detachable packing cube at the bottom, allowing you to separate shoes or any other items from the main compartment. With a suitcase-style opening to the main compartment, a cushioned laptop sleeve, and an over-the-trolley sleeve, the Carry Cube Backpack is perfect for long weekends, or as an under-seat bag for all of your travels. Specifications: Dimensions: 18.5"x12.5"x6.5" including cube. Cube Dims: 12.5"x6.5"x3.5". Weighs 2 lbs . Fits laptops up to 15" Volume of Main Compartment: 14.7 liters Volume of Cube: 4.66 Material: Nylon with poly lining. Nylon zippers. Care instructions: Wipe clean with damp cloth