Lang Yarns Luna knitting yarn is composed of 90% alpaca, 10% nylon and knits on knitting needles 6-7 mm (US 9-10.5 / UK 4-2) for a gauge of 17 st. and 25 rows.
In a 50g (1.75 oz) ball there are about 125 m (132 yd) so for quantities of yarn plan on:
700g = 14 balls for men size M
500g = 10 balls for women size M
400g = 8 balls for children 10 yrs
Hand wash with detergent for wool without fabric softener.