Lang Yarns Liberty novelty knitting yarn, part of the Wool Addicts Collection, is composed of 100% cotton.
It knits on knitting needles 6 mm (US 10 / UK 4) for a gauge of 11 stitches and 19 rows.
In a 50 gram (1.75 oz) ball there are about 60 meters (64 yd) so plan on:
600 g = 12 balls for men size M
450 g = 9 balls for women size M
350 g = 7 balls for children 10 yrs.
Machine wash 30°C (86°F) with detergent for wool without fabric softener.