Size Reference
M:waist 60~67cm，suitable for weight 47~50kg;
L:waist 70~73cm，suitable for weight 50~57kg;
XL:waist 76~80cm，suitable for weight 58~65kg;
XXL:waist 83~86cm，suitable for weight 65~72kg;
XXXL:waist 93~96cm，suitable for weight 73~80kg;