Lang Yarns Quattro knitting yarn, very inexpensive, is a knitting yarn composed of 100% gauzed mercerised cotton and knits on knitting needles 3-4 mm (US 3-5 / UK 10-8) for a gauge of 24 st. and 32 rg.
There are about 120 m (132 yds) in a 50g (1.75 oz) ball so allow:
700g = 14 balls for Men size M
600g = 12 balls for Women size M
400g = 8 balls for Children 10 yrs
Machine washable at 40°C (104°F) with detergent for wool textiles without softener, iron on medium.