No one's gonna question tampons. Each tube in this booze-smuggling device is disguised as a tampon. Each holds 1 oz. of whatever firewater or apple juice you choose to put in there, and there are 5 tubes. Simple math tells us that means you can smuggle a total of 5 oz.
Thinking to yourself, "But I'm a guy! Why would I have tampons?" Well, clearly you're not woke like this guy. Wise up.