Packing & Compression
The suitcase is never too small; the clothes are just full of air. Cube sets in ripstop and mesh, double-zip compression that takes a second pass at the volume, and roll-down bags that push the last of it out by hand.
Sets run from three pieces to eight, so you can match the system to the bag rather than the other way round. Nothing here has a pump, a battery or a valve to lose.