Vacuum Compression: a vacuum-compressible packing cube that can increase your packing capacity by up to 60%, Packing Cube Design: AirMAX combines the best of organization and compression. With a 5-inch depth, it allows you to organize folded or rolled clothes Mini Vacuum Pump Included: The AirMAX comes with a compact and lightweight mini vacuum pump, measuring just 5 x 6 x 9 cm and weighing under 120 grams. It operates on 6 AAA batteries