A 60/20/20 blend of Merino, yak, and silk. Merino is a fine wool, great for next-to-the skin garments. Yak down can be as fine as 13 microns! It is extraordinarily soft, very warm, with a bit of elasticity. A bit of silk adds shine and strength. Spin into a fine, warm, silky skein of fibery goodness! Or use in a wet felting project.