Premier Yarns-Boreal Yarn. This 100% wool roving yarn shades gently from one color to the next, producing softly blended stripes. The versatile medium weight works well for garments and accessories alike. Boreal is great for felted projects. Weight Category: 4. Content: 100% wool. Putup: 1.75 oz/50g, 109 yd/100m. Gauge: 18sx19r = 4in/10cm on size US8/5mm knitting needles. Suggested crochet hook size USI-9/5.5mm. Care: hand wash, dry flat, do not bleach, do not iron, do not dry clean. Comes in a variety of colors. Each sold separately. Imported.