Lang Yarns London knitting yarn, a robust yarn, is a yarn composed of 70% virgin wool, 30% acrylic and knits with knitting needles 4.5-5 mm (US 7-8 / UK 7-6) for a gauge of 16 st. and 23 rows.
There are about 100 m (109 yds) in a 50g (1.75 oz) ball so plan to knit:
550g = 11 balls for men size M
400g = 8 11 balls for women size M
300g = 6 11 balls for children 10 yrs
Machine wash at 30°C (86°F) with detergent for wool without softener.