The Specter Cube Set features ultra lightweight packing organization. Three silnylon cubes that weigh less than 2.2 oz. cumulatively, means you can keep your clothing organized without worrying about weight. This translucent fabric is the same fabric used for lightweight tents and backpacks, it is super-durable, stain and water-resistant. Provide customization and space savings for any backpack, day bag or piece of luggage. If you can roll it, these travel cubes can hold it.