The model on the pictures is 1.68 m tall and usually wears the German size S/M.
The recommended size is an S up to M
Please compare the measurements!
Width under the arms: approx. 52 cm
Length from neckline: approx. 53 cm
Sleeve width upper arm: 14 cm (stretchable, the sleeves are meant to be close fitting)
Sleeve length from underarm: approx. 48 cm