Small - A=46cm / B=70cm
Medium - A=51cm / B=73cm
Large - A=56cm / B=76cm
X-Large - A=61cm / B=78cm
XX-Large - A=66cm / B=81cm
3XL - A=71cm / B=84cm
4XL - A=76cm / B=86cm
5XL - A=81cm / B=89cm