Pack more than you think is possible. Each packing cube uses a zippered compression system to condense your clothes and maximize your space by 50 percent. The Nomatic compression packing cube is made of rip-stop nylon to help you pack even more. The packing cube has 2 compartments, a side for clean clothes and a side for dirty clothes. Simply put in the clothes and let the zipper compress the cube down from 5 inches to 2 ½ inches.