Size Chart:

Size(cm)
XS Length: 62 Age: 0-1 Year
S Length: 72 Age: 1-3 Years
M Length: 82 Age: 3-5 Years
L Length: 92 Age: 5-7 Years
XL Length: 102 Age: 7-9 Years

Size(inch)
XS Length: 24.41 Age: 0-1 Year
S Length: 28.35 Age: 1-3 Years
M Length: 32.28 Age: 3-5 Years
L Length: 36.22 Age: 5-7 Years
XL Length: 40.16 Age: 7-9 Years