Lang Yarns Urania knitting yarn is composed of 70% virgin wool and 30% viscose which knits on knitting needles 3.5-4 mm (US 4-5 / UK 9-8) for a gauge of 21 stitches and 30 rows.
In a 50 gram ball there are about 135 meters (147 yd). For quantities of yarn plan on:
550 g = 11 balls for men size M
400 g = 8 balls for women size M
300 g = 6 balls for children 10 yrs
Machine wash at 30°C (86°F) with detergent for wool without fabric softener.