TONNEAU COVER, BED RAIL, AND A TONNEAU COVER SYSTEM

A tonneau cover for at least partially covering a cargo area of a vehicle, the cargo area having a pair of opposing side walls, a front wall, and a tailgate, the tonneau cover including: a first panel configured to be arranged adjacent to the front wall; a second panel adjacent to the first panel and rearward of the first panel, the second panel configured to be folded relative to the first panel to move the tonneau cover between an open configuration and a closed configuration. The first panel comprises a first panel section and a second panel section, and the first panel section is arranged at an incline relative to the second panel section.