Wind deflector in the automotive sector

Wind deflector for a closable by means of a movable roof part and partially releasable roof opening of a vehicle, a deployment element and / or a base member in its longitudinal direction a groove extending with in the longitudinal direction, having opposed side walls, wherein in the region of at least one of the side walls sections, projections which extend in direction of the respective opposite side wall extend, and / or depressions are provided which extend from the respective opposite side wall away. Furthermore, the process for the preparation of deflectors, and means for producing Ausstellelementen and / or base elements are indicated.