Size
S: for 40KG-49KG (chest 82CM)
M: for 50KG-54KG (chest 86CM)
L: for 55KG-59KG (chest 90CM)
XL: for 60KG-64KG (chest 94CM)
XXL: for 65KG-69KG (chest 98CM)
XXXL: for 70KG-75KG (chest 102CM)