Quote Originally Posted by Bugbear View Post
It says "Viscose/Polyester." I put it in the apron of a canvas kilt and machine washed it several times. It didn't mess up the interfacing.

If there is wool and goat hair in it, it doesn't shrink in the washer.
The link that fluter provided and I quoted goes to the Hymo page which quotes the content of 60%wool 40% hair.