ProperAutoCare.com also has a great writeup on MF towels and the differences. Check out Microfiber - What's the big deal? . Good reading and great products!

 

It's almost impossible to find a true 100% cotton towel. Most are stitched together with nylon or polyester thread and because the content is less then 1% of the towel they don't have to list it.

If you buy cotton towels cut off all the edges even the ribbed portions then you'll have 100% cotton and no scratching. Several of the Zaino distributors are/were selling 100% cotton towels edged with cotton and cotton thread. That's what I use with my Zaino.