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. Crochet Gauge: 4" x 4" (10cm x 10cm) 12 sc x 14 r with 5.5 mm (US I/9) Crochet Hook | Knitting Gauge: 4" x 4" (10cm x 10cm) 15 sts x 25 r with 5 mm (US 8) Knitting Needles Ball Size: Each ball of this #5 Bulky Gauge Yarn is 300g (10.5 oz) and 288m (315 yd) long.