As the above two American Heritage kilts clearly show, it is hard to tell the difference. Even in close quarters, the difference is difficult. At the New Hampshire Highland Games, my USAK American Heritage was taken to be the real wool by a few, who had asked about the tartan. When I explained the Poly viscous advantage, I had several who had to compare the "feel" of my kilt versus the wool that they were wearing. Two young lasses went into great detail in examining the kilt I was wearing against the wool kilt of a young gentleman that was in the clan tent area at the same time. Two lasses, and two "kilt checks". Grant should have been there.