The UCI holds World Championship races each September. The winners are able to wear a white jersey with rainbow stripes for the next 12 month period until the following World Championships. The current champions are Mads Pedersen (Denmark)a Annemiek van Vleuten (The Netherlands), who can wear the jersey from September 2019 - September 2020. However, most of the races in this period have been cancelled or postponed. If the World's are held in September 2020 and Mads or Annemiek does not win, they should be able to wear a modified rainbow jersey (perhaps a black jersey with rainbow stripes) to any 2021 races that were not held in 2020. That way they would have the opportunity to compete in the rainbow jersey.