You will need

34/36in Chest - 8 Balls
38/40in Chest - 9 Balls
42/44in Chest - 9 Balls
46/48in Chest - 10 Balls
50/52in Chest - 10 Balls

8mm and 10mm Needles
1 66 (71 : 71 : 76 : 76)cm open ended Zip

This pattern is knitted in Charcoal Shade 2371