Cascade Heritage Sock Yarn75% Superwash Merino, 25% NylonNeedle Size: US 1.5-3 (2.0-3.25mm)Weight:100g (3.5oz)437 yardsCascade Heritage Sock Yarn. This beautiful, washable merino sock yarn from Cascade is perfect for your next socks! 75% superwash merino, 25% nylon. 437 yards. Needle Size:US 1.5-3 (2.0-3.25mm). Weight:100g (3.5oz)