Superwash Sock has a standard construction of 4/16nm with 400m (437 yds) per 100g. Made with 75% Superwashed Merino wool and 25% Nylon, the merino fibres have been specially treated before being spun to enable it to be machine washable. The merino is combined with a smaller percentage of nylon giving the knitted fabric extra durability and strength making it harder wearing. The yarn is perfect for socks but can equally can be knitted into scarves, shawls or even baby garments which will feel soft next to the skin due to the fine micron merino used. Pack Size:1 kg (10 x 100g skeins) Product Code: 49170 Composition: 75% Superwash Merino (21 micron) 25% Nylon Count: 4/16nm Meterage: 400m (437 yds) per 100g Wraps per inch: 14wpi Tension: 28 sts x 36 rows, in 10cm (4in), over st st using 3.25mm needles Yarn Weight: 4 Ply Hank Size: 100g Care Instructions: Machine washable on a wool program