Lang Yarns Bold knitting yarn is a solid color mesh yarn composed of 80% wool, 20% acrylic and knits on knitting needles 9 and 10 mm (US 13-15) for a gauge of 10 stitches and 15 rows.
In a 100 gram (3.50 oz) ball there are about 90 meters (98 yd) so to knit a sweater plan on:
900g = 9 balls for men size M
750g = 7 balls for women size M
500g = 5 balls for children 10 yrs.
Machine wash at 30°C (86°F) with detergent for wool without fabric softener.