As measured by hand,1-3 cm difference is allowed (1cm=0.39inch).
Height 160-170cm Weight 45-50kg Choose size S
Height 168-175cm Weight 50-55kg Choose size M
Height 170-178cm Weight 55-65kg Choose size L
Height 175-180cm Weight 65-75kg Choose XL
Height 175-182cm Weight 75-80kg Choose 2XL