Imagine unzipping your luggage after a long day of traveling and everything is exactly where you packed it. Nothing's shifted, crushed or wrinkled. And if you're staying somewhere for a night or two, there's no need to live out of your suitcase. Just place your ZipCubes in the dresser drawers and there you go! Biaggi "ZipCubes"come in 3 sizes (each set has the same sized cubes) and stack perfectly into our small, medium and large ZipSaks. Zipcubes add structure to the soft Biaggi Zipsak, and they distribute the weight of your belongings evenly throughout the bag. A complimentary draw string pouch is perfect for packing shoes, or for packing your laundry for the journey back home.