Friday Harbor (80% Merino Wool/20% Silk. Soft merino wool with the elegant appeal of silk with a complex twist for excellent stitch definition. Perfect yarn for luxury accessories and posh garments. . Weight: 100 g (3.5 oz); Approx. Yardage: 219 yds (200 m); Knitting Needle Size: US 7 (4.5 mm); Knitting Gauge: 20 sts = 4" (10 cm); Crochet Hook Size: I (5.5 mm); Crochet Gauge: 14 scs = 4" (10 cm); Suggested gauge only. Yarn weight is based on Craft Yarn Council guidelines. Suggested Care: Hand wash cold. Lay flat to dry. Store your little treasure neatly; after all, it may be a family heirloom.