Lang yarns Zero knitting yarn is a tube yarn composed of virgin wool which knits on knitting needles 4-4.5 mm for a gauge of 21 st. and 30 rows.
In a 50g (1.75 oz) ball there are about 120 m (131 yd) so fpr quantities plan on:
600g = 12 balls for men size M
450g = 9 ball for women size M
300g = 6 balls for children 10 yrs
Machine washable at 30°C (86°F) with detergent for wool without softener.