Lang Yarns Airolo knitting yarn, color 0022, is composed of 100% virgin wool, knits on knitting needles 5.5-6 mm (US 8-9 / UK 5-4) for a gauge of 17 st. and 23 rows.
In a 100 gram (1.5 oz) ball there are about 150 m (164 yd) so plan on:
800 g = 8 balls for men size M
600 g = 6 balls for women size M
400 g = 4 balls for children 10 yrs.
Machine wash 30°C (86°F) with detergent for wool without fabric softener.