So the floor mats've now brought for the winter so that the velor mats einsiffen not so. Arrived today and I must say the fit is perfect and the Klippse at the front Mats function as they should. Perhaps they should rather advance a two-day but ventilate the latest I'll find morning. Otherwise super price / performance Relationship I can only recommend!
To update so no you do not need ventilate. So you braise of no unpleasant smell of rubber. So good!