My first hoodie pattern is written to fit 3-18months old, using 4 ply 50 grams balls.

Sizes:      3mths        6mths           9mths     12mths    18mths

Chest:     40cm         45cm            47cm       50cm        53cm

Knitted in:  4 ply 50gm balls (approx. 170m) 

                3                 3                   3             4               4                   

Needles:   2.75mm and 3.25mm