Signature 4-Ply is a fingering weight sock yarn. This sock yarn has 75% wool (which is guaranteed to be 35% BFL) and 25% nylon. A skein contains 437 yards in a 100 gram ball. Pick up a patterned skein and a plain skein to make great Christmas socks! Gauge is 28 stitches and 36 rows to four inches on a US 3. Machine wash and lay (or hang) to dry.