You mean a woman can open it?

In 1953 Alcoa Aluminum[1] produced an advertisement promoting their HyTop twist-off bottle cap.

"[1] The advertisement has been subject to criticism in later reviews and is viewed as a symbol of casual sexism that was prevalent in the United States during the 1950s.

[3] The advertisement features a woman wearing red lipstick and looking at the reader while holding a Del Monte ketchup bottle with the appearance of being about to open it.

The first sentence of the article it accompanied stated, "Easily—without a knife blade, a bottle opener, or even a husband!

[4] In one such commentary, the New York Daily News stated that the woman in the advertisement is "clearly stunned and possibly delighted" at being able to open the bottle easily.