This yarn is a soft, plied fingering weight one. 100g/366m. 60% superwash extra fine merino, 20% mulberry silk, 20% natural grey yak. This is why it's grey undyed. Although it may be machine washed we do recommend gentle, cold handwash to prolong the life of yarn and your knits. Recommended needle size: 3-4 mm. (but always make gauge)