Reference size

S: Back length 20 CM; chest 32 CM
M: Back length 25 CM ; chest 37 CM
L: Back length 30 CM; chest 42 CM
XL: back length 35CM; chest 47 CM
XXL: back length 40 CM; chest 52 CM

S (recommended weight 1.25-2kg)
M (recommended weight 2-3kg)
L (recommended weight 3-4kg)
XL (recommended weight 4-6kg)
XXL (recommended weight 6-8kg)