Quote Originally Posted by Tobus View Post
If there's any extra fabric that can be snipped off without making any difference to the garment (like at the inside seams), take the sample and soak it in bleach overnight. If it dissolves, it's wool.
Or burn it. If it melts, it ain't wool. If it burns up quickly, it ain't wool. If you have to try pretty hard to get it to burn, it's wool.