1 [2: 3: 4: 5: 6: 7: 8: 9]
The given sizes are called Sizes 1–9 and are recommended to fit a chest circumference of: 76–81 [86–91: 97–102: 107–112: 117–122: 127–132: 137–142: 147–152: 157–162] cm (30–32 [34–36: 38–40: 42–44: 46–48: 50–52: 54–56: 58–60: 62–64] in)