I would be very cautious buying from a retailer who says their acrylic wool is a better buy than "old sheep's wool"
because it is harder wearing and longer lasting. Especially in light of Nathan's post above. 100 year old acrylic?
Acrylic wool? All my kilts to date are from Rocky, PV and medium weight wool, as my nonstandard body requires
custom built, and Social Security is not the best way to acquire much heavy weight wool (working on it).

Whatever you get, enjoy.