A fold and tumble seat assembly includes a seat cushion having an underside that forms a floor surface when the seat cushion is rotated to a stowed position, and a seat flap attached to the underside of the seat cushion for bridging a gap formed between the seat cushion and an adjacent vehicle floor surface when the seat cushion is in the stowed position. The flap includes a protruding tip adjacent a distal end thereof for facilitating sliding movement of the distal end along the adjacent vehicle floor surface when the seat cushion is rotated.