Sorry for the delay. I had a little extended 4th weekend.
To answer your question, the stiching is the same material as the towel, microfiber. I have never had a problem with the stiching causing a problem. Have you?
On some other brands I've tried in the past I've had problems with stiching induced scratches. The worst was with the Mequiar's Ultimate Wipe.
I've become a bit paranoid about this actually. I now fold my MF towels in quarters so that there are no exposed borders.
Anyway, I ordered a couple of the Autofiber cloths last week to give them a test drive. They haven't arrived yet so hopefully I get them later this week.
