Errata Page 36, Correct Text:
Materials
Patons Shetland Chunky (100 g / 3.5 oz)
Main Color: XS/S – 9 balls, M – 9 balls, L – 10 balls, XL – 11 balls, 2/3 XL – 13 balls, 4/5XL – 14 balls.

See also Errata for Page 42