XS
2 - 4
4 - 6
30inch/76cm - 31.5inch/80cm
22inch/56cm - 23.5inch/60cm
33.5inch/86cm - 35.5inch/90cm
S
4 - 6
6 - 8
31.5inch/80cm - 33inch/84cm
23.5inch/60cm - 25inch/64cm
35.5inch/90cm - 37inch/94cm
M
6 - 8
8 - 10
33inch/84cm - 34.5inch/88cm
25inch/64cm - 26.5inch/68cm
37inch/94cm - 38.5inch/98cm
L
10 - 12
12 - 14
34.5inch/88cm - 36inch/92cm
26.5inch/68cm - 28.5inch/72cm
38.5inch/98cm - 40inch/102cm
XL
14 - 16
16 - 18
36inch/92cm - 37.5inch/96cm
28.5inch/72cm - 30inch/76cm
40inch/102cm - 41.5inch/106cm