I just bought a MF towel from Target, one of their Vroom brand products. I got it home and saw on the tag that its 80% polyester. I've read SO much on here that polyester threading can cause scratches so i was wondering if it is normal for a MF towel to be almost completely made of polyester. It seems very very soft and worked very well, dried the whole car without ringing it out once, but afterwards is when i saw the tag...any takes on this?