Bluestocking is 80% Bluefaced Leicester wool/20%nylon. Bluefaced Leicester is an English breed of sheep with long lustrous, strong fibers suitable for projects that require a durable yarn. Bluestocking is a three ply yarn, put up in generous skeins of 420 yds. It knits up at 8sts/inch on US size 1 needles. Recommended needle size 1-3 for socks and mittens. Great for shawls and garments on larger needles.