Eagle Creek, which pioneered nylon zippered organizer bags, has introduced expandable bags that unzip to increase suitcase space. The Pack-It Specter Compression Cubes, which are actually rectangular, are made of ripstop nylon that's not much heavier than a plastic bag. Both bags in the set expand to about triple the depth. The bags are translucent enough to see the contents. The sets come in bright green, orange, blue, purple or white, which means you can color-code your packing. Eagle Creek Pack-It Specter Compression Cube Set costs $39.95. Info: www.lat.ms/1O5zCtK