Description from their website:

Extra fine (19.5 micron) merino is used for these yarns. It feels soft and gentle against the skin. These yarns are worsted spun from extra long staple fibres to produce a yarn that is fine and strong with a silky feel.

A very versatile yarn, it can be used for shawls, wraps, mittens, socks and light jumpers. Washable in cold water on a gentle cycle, it is also suitable for children’s and baby clothes. Very soft and springy.