This is a great polo shirt for work. Measurements (approximate, taken by an amateur): M: Shoulder width 40.5cm, Chest width (underarm to underarm) 48cm, Length 68cm L: Shoulder width 45cm, Chest width (underarm to underarm) 51cm, Length 70cm Regarding shoulder width, I wasn't sure where to measure, so I measured from the seam/transition point where the shoulder meets the sleeve.