3 + 6-9 months:
Gauge: 30 stitches in 10 cm on 2,5 mm needles. 2 and 2,5 mm needles needed.

1 + 2 + 4 years:
Gauge: 27 stitches in 10 cm on 3 mm needles. 2,5 and 3 mm needles needed.