How do I ship 10ft tubes of sensitive material without bending? Need packaging solution

I have a project where I am trying to ship 10ft wires (.100in OD) overseas without bending. The wire is the consistency of solder and bends very easily.

Does anyone have any recommendations for how I can ship these parts? We’ve tried putting them in cardboard tubes. We’ve put them on cardboard trays inside of tubes and vacuum sealed bags around the trays. They still occasionally slide or bend. Looking for other creative ideas?

Any help is greatly appreciated!