Agree with Peckesh and Ckcowl. Monofiliment has advanced by leaps and bounds in just the past 10 years let alone how far it has come since the 60's. It used to be nylon and like fishing line. but now, both Superior and Filtec (Makers of glide) have a beautiful monofiliment made of polyester. It is soft and fine as a human hair, low gloss and is the best for SITD around applique. I would not use it to quilt an entire quilt but for ditch work around applique it is a wonderful choice.