Lang Yarns Footprints knitting yarn is a multicolored yarn composed of 45% cotton, 42% virgin wool superwash and 13% nylon. It knits on knitting needles 2.5 and 3.5 m (US -4) for a gauge of 30 stitches and 41 rows.
In a 100 gram (3.5 oz) ball there are about 400 meters (437 yd) so for a sweater for women size M plan on:
500g = 5 balls for men size M
400g = 4 balls for women size M
300g = 3 balls for children 10 yrs old
100g = 1 ball for socks.
Machine wash at 30°C (86°F) with gentle detergent for wool without softener.