Hi Bunny1999,
Thanks for linking the video.
There are also some instructions for packaging latex layers in post #5 here that should be helpful as well (although it’s not a video).
Manufacturers or retailers that sell component mattresses with layers that can be exchanged will also generally provide instructions for returning or exchanging them and in some cases they can just be returned in the original shipping boxes without even needing to compress them.
It would be much more difficult (and depending on the specific mattress perhaps not even possible) to compress an entire mattress that didn’t have individual layers.
Phoenix