The biggest professional race win ever by an American was secured wearing neoprene gloves. 1988 Giro d'Italia. Andy Hampsten's ride over Gavia Pass. No, he didn't win that stage. He settled for second, But that ride secured his place in the overall. In temps in the 20s and snow, he wore shorts, a long sleeve but light wool jersey and neoprene gloves he had from the States.
https://www.google.com/search?q=andy...oAEwDQ#imgrc=_
Ben