I think part of it is they squish or can fit to shape differently than folded, meaning they can become sorta a hexagon sort of shape once compressed against eac

I think part of it is they squish or can fit to shape differently than folded, meaning they can become sorta a hexagon sort of shape once compressed against eachother, and that’s the most efficient space filling shape. Also, like others said you don’t have to keep pressure on it to keep its state.