I'm sorry if this has been addressed before, I did try searching the forums...

Does anyone have a good method of re-folding a Heatsheet, in a "Z" or accordion manner, so that it's roughly the same area but thinner than as shipped?

The way the factory does it (rolls it up, then folds it) traps a lot of air and makes it thicker than it needs to be.

My various attempts at re-folding one of these things have all failed miserably. The material is hard work with being so slippery.