22 Micron Superwash Merino Wool. Everything you love in a Merino and it's machine washable! Superwash wool is treated so that the tiny barbs on the individual fibers won't interlock with one another, which is what happens in the felting process. This fiber will not felt because of this. Enjoy the next-to-skin softness for a wide range of accessories, socks, and children's garments. Keep in mind that even though it is machine washable you will still want to treat it with respect, avoiding extremely hot settings to be sure not to damage the fiber. ½ pound put-up; top (combed); 22 microns; 3''–4'' (7½–10 cm) fiber length.