Lion Brand Color Theory Yarn - Two of Wands designer Alexandra Tavel has brought her sense of color to this aptly named worsted weight yarn. As with Hue + Me, Color Theory lets you mix and match hues with ease. There are no wrong combinations, only possibilities! Color Theory yarn is crafted from machine washable and dryable 100% easy-care acrylic, giving this classic CYC #4 worsted weight yarn even more reason to become your go-to option for accessories and wearables for the whole family. Weight Category: 4. Content: 100% Acrylic. Put up: 3.5oz/100g, 246yd/225m. Gauge: 20s x 27r = 4in/10cm on size US 7/4.5mm knitting needles. Suggested crochet hook size: US I9/5.5mm. Machine Wash, Tumble Dry. Imported.