Red Heart-Comfort Yarn. This worsted weight yarn comes in an excellent color range including both solids and prints. Weight category: 4. Content: 100% Acrylic. Put up: Solids-16oz/454g 867yds/792m. Multi-12oz/240g 649yds/593m. Gauge: Knit-18st x 24r = 4in/10cm in size US7/4.5mm needles. Crochet-13sc x 17r = 4in/10cm on size I9/5.5mm hooks. No dyelot solids. Dyelotted Multi s: We try but are not always able to match dyelots. Care: Machine wash tumble dry do not bleach do not iron dry cleanable. A.