The Regia Premium range is sock yarn with a little extra. In this case the extra is silk, a whopping 20% silk. You can really feel the silk, but it is still machine washable to 40 degrees and the polyamide content makes for hard wearing socks. The colours in the in the Silk Colour range are softly graded so there are paler stripes which blend subtly together. One ball will make a good sized adult pair of socks, or you can use it for shawls or garments. It's a beautiful, versatile yarn.