Lang Yarns Cashmere Premium knitting yarn, color 0004, is composed of 100% cashmere and is finer than the Cashmere Classic, knits on knitting needles 3.5-4.5 mm for a gauge of 22 st. and 34 rows.
A 25g ball contains about 115 m (125 yd) so for quantities of yarn plan on:
375g = 15 balls for men size M
300g = 12 balls for women size M
Hand wash with detergent for wool without fabric softener.