Bernat Baby Blanket Yarn - Little Cosmos. This fast working yarn is perfect for super soft blankets, hats, booties, and more for baby. Weight category: 6, 100% polyester, 3.5oz/100g, 86yd/78m. Gauge: 8st x 13r = 4in/10cm on size US11/8mm knitting needles. Recommended crochet hook size L11/8mm. Dyelotted: we try but are not always able to match dyelots. Care: machine wash, tumble dry, do not bleach, do not iron, do not dry clean.