Lang Yarns Marisa Color is a high quality multicolored crochet yarn composed of 100% Egyptian cotton and knits on knitting needles 2.5-3 mm (US 2-3 / UK 11-10) for a gauge of 32 st. and 44 rgs.
There are about 210 m (229 yds) in a 50g (1.75 oz) ball so plan on:
600g = 12 balls for Men size M
450g = 9 balls for Women size M
300g = 6 balls for Children 10 yrs
Machine wash at 60°C (140°F) with detergent for wool without softener.