0-6months, 6-12months, 1-2years, 2-3years, 4-5years, 6-7years

To fit chest
16 (18, 20, 22, 24, 26) inches
41 (46, 51, 56, 61, 66) cm

Actual size
18.75 (20.75, 22.75, 24.5, 26.5, 28.5)
47.5 (52.5, 57.5, 62.5, 67.5, 72.5) cm