As of from Snow 14/15 production, Zeiss lenses became an option on the Retina, Retina Big and Iris model. Due to the increased thickness of the Zeiss lens compared to our other lens options, these frames are slightly revised as from this point. This can unfortunately make it hard to fit a new Zeiss lens into an old frame which is produced before this season, which is especially obvious on the Iris model in size Small.
If you for some reason would need another lens for your old Iris small, please contact us through our customer service and we will be able to help you out.