[clearvision]

The orange fibers are acrylic, which I believe is used in "fluffy" type sweaters.

[Eva]

Oh, acrylic, much more common is sweaters, also, blankets and stuffed animals or dog beds. The sweater is beginning to look more and more likely. I know it had been discussed as red, but the shirts looked red to me, also. There seems to be some question about what color orange is.