The Eagle Creek Pack It Spectre 1/4 Cube, fits in most carry on bags. An ultra-light packing solution from Eagle Creek, that is a great way to keep clothing and small accessories organized, while travelling. Made from Silnylon, this translucent fabric is the same fabric used for lightweight tents and backpacks. Its super-durable, stain and water-repellent. Finally, organization in just the size you need. Provide customization and space savings for any backpack, day bag or piece of luggage with Pack-It Specterâ„¢ travel cubes.