Coats Yarn-Red Heart Medley Yarn. This bulky yarn is perfect for all your knitting and crocheting needs. Weight category: 5. Content: 100% Acrylic. Putup: 4oz/113g; 86yd/78m. Gauge: 10s x 16r = 4in/10cm on size US11/8mm knitting needles. Suggested crochet hook size K10.5/6.5mm. Dyelotted: we try but are not always able to match dyelots. Care: machine wash, tumble dry, do not bleach, do not iron, dry clean with P solvents only. Imported.