Wind deflector for cabriolet vehicle

The arrangement has a rear fixation unit formed by lateral attachments provided with a longitudinal finger that comprises an end forming a hook toward top. The finger is partially inserted inside an outlet opening (42) of a safety belt strap arranged in a rear trim element (43) of a vehicle in a utilization position of the finger. The finger is displaced forward and upward under the effect of impact in an anti-swing position of the finger. A hook (36) of the finger cooperates with an upper edge (52) of the opening to prevent a windbreaker net from swinging toward front.