Lang Yarns Venus knitting yarn is a chainette yarn composed of 50% fine merino wool and 50% cotton. It knits on knitting needles 4 and 4.5 mm (US 6-7 / UK 8-7) for a gauge of 21 stitches and 28 rows.
In a 50 gram (1.75 oz) ball there are about 170 meters (185 yd) so to knit a sweater plan on:
700g = 14 balls for men size M
500g = 10 balls for women size M
400g = 8 balls for children 10 yrs old.
Machine wash at 30°C (86°F) with gentle detergent for wool without softener.