Hand Dyed Polwarth Tussah Combed Top 4 oz Pine Bark for Felting and Spinning Similar to merino wool, our combed Polworth top is blended with Tussah silk and has a lovely sheen. It is a pleasure to spin and wet felt. Suitable for many fiber arts applications. It has a relatively long fiber length. Next-to-the skin softness. Polworth has 22 - 25 micron count. Four ounces individually hand dyed in Montana.