English to Spanish Other Sports / Fitness / Recreation Golf

Buen día. Estoy traduciendo una historia de P. G. Wodehouse y tengo serios problemas con el término "liver-pad". Creo que es algo que se usa para proteger el pecho, pero no puedo encontrar el término adecuado.

Les dejo parte de la historia.


"I am quite well, thank you, Agnes," said Vincent Jopp.
"Are you wearing your LIVER-PAD?"
A frown flitted across my employer's strong face.
"I am not wearing my LIVER-PAD," he replied, brusquely.
"Oh, Vincent, how rash of you!"
He was about to speak, when a sudden exclamation from his rear checked him. A genial-looking woman in a sports coat was standing there, eyeing him with a sort of humorous horror.
"Well, Jane," he said.
(...)
"You poor dear man!" went on Mrs. Jane Jukes Jopp. "What practical joker ever lured you into appearing in public in knickerbockers?"
"I don't object to the knickerbockers," said Mrs. Agnes Parsons Jopp, "but when he foolishly comes out in quite a strong east wind without his LIVER-PAD—"

Muchas gracias.