This felted buttoned neck wrap is a combination of the wet-felted scarf
I did using a car buffer, and another easy elegant neck wrap
I've come to love wet felting--which is the magic of whipping up lovely wearable art out of unlikely components. It is true alchemy.
I also like wet felting because it is an art rather than a science. The results are always a mystery to the artist. With practice, you can control your results better, but part of the fun is precisely its unpredictability.
The felted neck wrap in this instructable is made out of cheap mesh fabric (from a post-Halloween sale) and various loose fibers including merino wool, bamboo and silk. I didn't measure anything in the making of this neck wrap, but here are the approximate materials needed:
A piece of mesh fabric about 8" x 48"
Merino wool roving (less than an ounce)
Bamboo fibers for use in felting (a handful)
Silk yarn (about 60 inches)