Lang Yarns Fantomas cotton knitting yarn, color 0025, is composed of 75% fine wool and 25% nylon for strength.
This yarn knits on knitting needles 2.5-3.5 mm (US 2-4 / UK 4-8) for a gauge of 25 st. and 35 rows.
In a ball of 50g (1.75 oz) there are about 140 m (153 yd) so allow:
550g = 11 balls for men size M
450g = 9 balls for women size M
300g = 6 balls for children 10 yrs
Machine washable at 40°C (104°F) with detergent for wool without softener.