Red Heart Super Saver Yarn. This medium weight has been America s bestselling yarn for over seventy years! Perfect for all knit and crochet projects. Weight category: 4. Content: 100% acrylic. Putup: 5oz/141g, 344yd/223m. Gauge: 17st x 23r = 4in/10cm on size US8/5mm knitting needles, Suggested crochet hook size I9/5.5mm hook. Dyelotted: We try but are not always able to match dyelots. Care: machine wash, tumble dry, do not bleach, do not iron, dry cleanable. Made in USA.