No. Although a packing cube is designed to conserve suitcase;space by helping you pack more efficiently, it does not;compress your items so they are airtight. A travel compression bag;is designed primarily for clothes. It's;a terrific space saver, but when sealed, the bag might take an odd shape that doesn't mesh precisely with your other items. Furthermore, the;clothing;inside a compression bag is more likely to become wrinkled in transit.