Lang Yarns Water knitting yarn, color 0009, is a a crimped yarn composed of 100% baby alpaca that knits on knitting needles 4.5-5 mm for a gauge of 17 stitches and 24 rows.
In a 50 gram (1.75 oz) ball there are about 140 meters (153 yd) so for quantities plan:
400 g = 8 balls for men size M
300 g = 6 balls for women size M
200 g = 4 balls for children 10 yrs.
Machine washable at 30°C (86°F) with detergent for delicate textiles without softener.