TEHETE 100% Merino Wool Yarn for Knitting 3-Ply Luxury Warm Soft Lightweight Crochet Yarn (Ginger)What is Merino wool? Merino wool is a natural fiber grown by merino sheep. It is finer and softer than normal wool, so it does not hurt the skin. And when you put wool on your skin, you can get a lot of benefits. The thickness of the wool fiber is measured in microns. While the average human hair is about 60 microns, Merino fibers typically range from 13 24 microns. These Merino fibers are classified by their thickness as follows: Merino Merino (21 26