It’s actually got some sort of plastic synthetic material woven in with it that looks like blue ribbon style dental floss.  

It isn’t super comfortable to walk on, it was several inches shorter than advertised. 

Had initially planned to get the long runner for the hallway then add a couple smaller ones in other areas.  After some time with the runner, and pulling plastic material from it, decided pretty easily against it. 

Don’t hate it, but for 300+ I expected a bit better.