Lang Yarns Happiness knitting yarn, part of the Wool Addicts collection, is composed of 65% cotton and 35% nylon, knits on knitting needles 5.5-6 mm (US 8-9 / UK 5-4) for a gauge of 18 stitches and 26 rows.
In a 50 gram ball (1.75 oz) there are abut 135 meters (147 yd) so for quantities to knit :
500 g = 10 balls for Men size M
350 g = 7 balls for Women size M
250 g = 5 balls for Children 10 yrs.
Machine wash at 30°C (86°F) with gentle detergent for wool without softener.