You will need

Hooded Jacket
2-3 years (22in Chest) - 3 Balls
4-5 years (24in Chest) - 3 Balls
6-7 years (26in Chest) - 4 Balls
8-9 years (28in Chest) - 5 Balls
10-11 years (30in Chest) - 5 Balls
12-13 years (32in Chest) - 6 Balls

Jacket with Stand Up Neck
2-3 years (22in Chest) - 2 Balls
4-5 years (24in Chest) - 3 Balls
6-7 years (26in Chest) - 3 Balls
8-9 years (28in Chest) - 4 Balls
10-11 years (30in Chest) - 5 Balls
12-13 years (32in Chest) - 5 Balls

4mm and 5mm Needles
Cable Needle
Stitch Holder
6 (6 : 6 : 7 : 7 : 7) Buttons