I.-A cigarette packaging unit is made of cardboard or a flexible, parallelepiped-shaped material, the characteristics of which may be specified by order.
II-The unit pack complies with the size requirements for the health warnings set out in article L. 3512-22.
III-The outer and inner surfaces of unit packs, outer packaging and cigarette overwrappers are smooth and flat.
By way of derogation, the characteristics of a “calibration mark” resulting solely from the manufacturing process are authorised.