That's what I thought too! Before I got mine, I always thought it was made of really nice material or something, but when I saw it in person, I was like, "What the heck is this..?" lolI always thought it was shoelace LOL ...?? I'd like to know too!
I worry about the lace on my Vert D'eau turning black from dirt/wear, but not about it ripping or wearing down.