Here’s the whole deal in a nutshell. Your bag must be small. Like, “cute clutch” small. Not “I’m moving into your building” small.
Officially, we’re talking 12 x 6 x 12 inches. That’s about the size of a hardcover Harry Potter. Or a very chubby cat. If your bag can’t fit under your armpit, it’s probably too big.
Pro tip? If you have to ask yourself “Is this too big?”—yes. Yes it is.
What About Backpacks?
Backpacks are a hard no. Unless you’re a toddler. Or a professional mountaineer with a tiny emotional support backpack. Just… leave the North Face at home.
They’ll make you check it, and nobody wants to be that person holding up the line while a security guard gently evaluates your life choices.