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: 4" x 4" (10cm x 10cm) 8 sts x 13 r with 8 mm (US 11) Knitting Needles Crochet Gauge: 4" x 4" (10cm x 10cm) 7 sc x 8 r with 8 mm (US L-11) Crochet Hook Ball Size: Each ball of this #6 Super Bulky Yarn is 300g (10.5 oz) and 201m (220 yd) long.