3-1-1 rule?

The containers must be 3 ounces, so it won't work with a 6-ounce container that is half full. You can pack your baggie as full as you want as long as it closes; I've managed to put shampoo, conditioner, perfume, toothpaste, liquid makeup, and 6 or 8 of the tiny airplane liquor bottles in one bag with no problem.