Reinforced panel-shaped closure means for vehicles

The invention relates to panel-shaped closure means (1) for a roof opening of an open roof construction for a vehicle, which closure means (1) in the vicinity of at least one of its edges (3,4) is provided with a reinforcing member (5,6). At least one reinforcing member (5,6) is a hydro-formed member. Preferably, each hydro-formed member is shaped as a tubular member.