Lang Yarns Cashmere Lace double twist knitting yarn is composed of 100% cashmere wool, knits on knitting needles 3 and 3.5 mm (US -4 / UK 11-) for a gauge of 25 stitches and 41 rows.
In a 25 gram ball there are about 170 meters (185 yd) so for quantities of yarn plan on:
250g = 10 balls for mrn size M
200g = 8 balls for women size M
150g = 6 balls for children 10 yrs.
Hand wash with detergent for wool without fabric softener.