Which frame size should I choose for CGO600 Pro?

We offer four frame sizes for the CGO600 Pro:

S (480 mm) for riders of 160-170 cm (5'3" ~ 5'7")

M (500 mm) for riders of 165-185 cm (5'5" ~ 6'1")

L (540 mm) for riders of 180-200 cm (5'10" ~ 6'6")

XL (580mm) for riders of >195cm (6'4")