Lang Yarns Fire knitting yarn from the Wool Addicts collection is composed of 98% wool, 2% polyester and knits on knitting needles 9 mm (US 13 / UK 00) for a gauge of 9 st. and 13 rows.
In a ball of 100g (3.5 oz) there are about 75 m (82 yd) so allow:
1000g = 10 skeins for men size M
800g = 8 skeins for women size M
500g = 5 skeins for children 10 yrs
Machine wash at 30°C (86°F) with detergent for wool without fabric softener.