Age Size Chest Length
2-3Y S 49cm/19.3" 42cm/16.5"
3-4Y M 51cm/20.1" 44cm/17.3"
4-5Y L 54cm/21.3" 47cm/18.5"
5-6Y XL 57cm/22.4" 49.5cm/19.5"
6-8Y XXL 59cm/23.2" 52.5cm/20.7"