You will need double-pointed needles in both sizes.

Finished measurements:
Head circumference: 14(14.5, 16.25, 17.5)“ 35(38, 42, 45) cm
Finished length: 6(7, 7.5, 8)” 15(17.5, 19, 20.5) cm

Yarn used:
Rowan Baby Cashsoft Merino
A. 112 Denim - 1 ball for all sizes
B. 122 Piglet - 1 ball for all sizes
C. 123 Pickles - 1 ball for all sizes