a roof panel having front and rear transversely extending sides, first and second longitudinally extending sides, and first and second guide elements respectively located on the first and second sides of the roof panel, the guide elements respectively engageable to first and second longitudinally extending guide rails attached to respective first and second longitudinally extending sides of a roof of a vehicle to enable the roof panel, with the front panel side leading, to slide along a longitudinal vehicle direction toward a roof opening between the first and second sides of the roof to close the roof opening and to enable the roof panel, with the rear panel side leading, to slide along an opposite longitudinal vehicle direction away from the roof opening to open the roof opening;

first and second sealing bodies;

first and second pairs of first and second sealing sections;

wherein the first sealing section of the first pair of sealing sections is fixedly connectable to the first side of the roof and the second sealing section of the first pair of sealing sections is connected to the first side of the roof panel, wherein the sealing sections of the first pair of sealing sections enclose a first wedge line extending from a first point in front of the front panel side at a first acute angle with respect to a first longitudinal vehicle plane which is on the first panel side and extends parallel to the longitudinal vehicle directions through the first point, wherein the second sealing section of the first pair of sealing sections extends at the first acute angle along the first panel side from the front panel side to the rear panel side;

wherein the first sealing section of the second pair of sealing sections is fixedly connectable to the second side of the roof and the second sealing section of the second pair of sealing sections is connected to the second side of the roof panel, wherein the sealing sections of the second pair of sealing sections enclose a second wedge line extending from a second point in front of the front panel side at a second acute angle with respect to a second longitudinal vehicle plane which is on the second panel side and extends parallel to the longitudinal vehicle directions through the second point, wherein the second sealing section of the second pair of sealing sections extends at the second acute angle along the second panel side from the front panel side to the rear panel side;

wherein the first sealing body is mounted on one of the sealing sections of the first pair of sealing sections and the second sealing body is mounted on one of the sealing sections of the second pair of sealing sections;

wherein the sealing bodies assume a working position when the roof panel closes the roof opening in response to a wedge effect generated by the wedge lines as the roof panel slides along the guide rails toward the roof opening, wherein the sealing bodies assume a resting position when the roof panel opens the roof opening;

wherein the second sealing section of the first pair of sealing sections is a component of a first inner support structure of the roof panel, and the second sealing section of the second pair of sealing sections is a component of a second inner support structure of the roof panel;

wherein the first inner support structure has an angular element whose free end together with a sliding profile projects into a U-shaped guide receptacle in the first guide rail;

wherein the second inner support structure has an angular element whose free end together with a sliding profile projects into a U-shaped guide receptacle in the second guide rail.