Serenity Sock Yarn-Gray FlannelCategory: Plymouth Sock YarnSerenity Sock joins together the resilience and warmth of superwash merino wool, the softness of rayon made from bamboo, and the durability of nylon. Weight Category: 1. Content: 50% superwash merino wool, 25% rayon, 25% nylon. Putup: 1.76oz/50g, 230yd/210m. Gauge: 28sx36r = 4in/10cm on size US2/2.75mm knitting needles. Suggested crochet hook size: E-4-3.5mm. Dylotted: we try but are not always able to match dyelots. Care: machine wash, tumble dry, do not iron, do not bleach. Comes in a variety of colors. Each sold separately. Imported.