Originally, the charentaises were worn by the valets of the French nobility. This enabled valets to sneak into their master's bedroom without waking him. They then walked "in hushed steps" as they came and went in the different rooms of the castle.
This is how they got their nickname: "les silencieuses" (the silent ones).
Repeatedly passing by in their charentaises and felt soles,
But the other positive aspect is that the valets polished the parquet floors thanks to the felt soles of their charentaises keeping the floors gleaming all year round.