Young rider classification in the Tour de France only open for first-time competitors, but in 1987 it became open for all cyclists less than 26 years of age at 1 January of the year following that tour. From 1989-1999, the white jersey was no longer awarded, although the competition was still calculated. Since 2000, the white jersey has again been awarded, open for all cyclists less than 26 years of age at 1 January of the year following that Tour. In 1997, the name of the competition officially changed to 'Souvenir Fabio Casartelli'. The optical retail chain Krys has sponsored the white jersey since 2015. Since the young
1956 Tour de France was ridden at the fastest average speed so far, over 36 km/h. Walkowiak became only the second rider, after Firmin Lambot in the 1922 Tour de France, to win without taking a single stage, and is the only Tour de France winner to date who never won a stage in any year. In the previous years, a flat tyre had to be repaired, but from 1956 on, it was allowed to change wheels. As was the custom since the 1930 Tour de France, the 1956 Tour de France was contested by national and regional teams. Seven national teams were sent,