Content: 100% polyester, Care: This yarn for knitting, crocheting, amigurumi and craft projects is easy to care for, simply machine wash and dry all crafted items. "Knitting Gauge: 12 sts and 17 rows with a 6.5 mm (U.S. 10.5) knitting needle Crochet Gauge: 10 sc and 11 rows with a 6.5 mm (U.S. K/10.5) crochet hook" Ball Size: Each ball of this #5 Bulky Gauge Yarn is 300g (10.5 oz) and 288m (315 yd) long.