For this pattern you will need:

Top

24" Chest - 3 100g Balls
26" Chest - 3 100g Balls
28" Chest - 4 100g Balls
30" Chest - 4 100g Balls
32" Chest - 5 100g Balls

Cardigan

24" Chest - 3 100g Balls
26" Chest - 3 100g Balls
28" Chest - 4 100g Balls
30" Chest - 4 100g Balls
32" Chest - 5 100g Balls

Needles: 3.75mm and 4mm.
1 buttong for top.
3(3:3:4:4) buttons for cardigan.