Quote Originally Posted by Canuck of NI View Post
If you can find a seam on the back of the kilt and isolate or extract a few threads, try exposing them to a small flame. If they burn and char, it's wool (or at least some natural material). If they melt, it's not wool. If the kilt goes up in flames, hey Dude, it was your idea in the first place! -but it wouldn't have been a safe garment to wear anyway.
That's why we discouraged synthetic materials in historical reenacting (campfires and all)!