An extruded portion of a roof weather strip includes a base portion fixed to a frame base portion and a seal portion projecting upward from the base portion. The seal portion is provided with a front side portion extending toward an outer periphery of the opening from the base portion and a rear side portion connecting a distal end of the front side portion with the base portion. A first boundary portion between the front side portion and the rear side portion is located on an outer peripheral side of the opening with respect to a connecting portion between the rear side portion and the base portion, so that the rear side portion is made to be deformed toward the outer peripheral side of the opening when the roof panel is closed.