Newer Furniture Back rest cushion filler - Correct Term?

[baileyuph]

In working with the latest furniture (China if you will), it is noticed that the filler
is (not foam) but something like a strand of course synthetic material.  It isn't a dacron.

Is there a correct term for this material?

Complaints often arise due to flattening.

This is just a curiosity from dealing with these cushions.

They need more filler!

Doyle

[SteveA]

Chop Suey