So, why 3.4 ounces specifically? Well, it's actually a pretty clever choice. The TSA figured that this size is small enough to prevent any significant amounts of liquid from being carried on, but big enough to fit the average-sized toothpaste or shampoo bottle. It's kind of like the goldilocks principle - not too big, not too small, but just right.
Airline Liquid Rules: Master The Travel Size Limits | QuartzMountain
And, fun fact: the 3.4-ounce limit is actually a pretty standard size for many cosmetic products. So, if you're a beauty enthusiast, you might already have a collection of tiny lip glosses and perfume samples that fit perfectly in your liquid bag. But, have you ever wondered how this size affects the environment, and whether it's actually making a difference in terms of security?
