Conversation so far:
What was notable about Louison Bobet's personality?
The most striking feature of Louison Bobet the man rather than rider was his ambition to behave like a Hollywood matinée idol, a character in a dinner suit tuxedo.
Did Louison Bobet's personality create any problems?
Normally urbane, charming, interesting and witty, Louison Bobet could become vindictive, spiteful, mean and petty, and he never hesitated to get rid of a team-mate if he upset him.
Are there any other interesting aspects about this Louison Bobet?
Louison Bobet was driven by personal hygiene and refused to accept his first yellow jersey because it had not been made with the pure wool he believed the only healthy material.
Did Sofil give Louison Bobet a new yellow jersey without artificial materials?
Goddet had to get Sofil to produce another jersey overnight, its logo still visible but artificial fabric absent.

Question: Why did he want the jersey to be made of pure wool?
Self-contained rewrite: Why did Louison Bobet want the leading biker jersey to be made of pure wool?