Lang Yarns Rosanna crochet yarn is a yarn composed of 100% combed mercerized Egyptian cotton and crochets on crochet hooks 1.5-2.5 mm (US 1/B / UK 12).
There are about 140 meters (153 yd) in a 25 gram (0.87 oz) ball so allow:
750 g = 30 balls for Men size M
600 g = 24 balls for Women size M
450 g = 18 balls for Children 10 yrs.
Machine washable at 60°C (140°F) with detergent for wool textiles without softener, iron on medium.