The rules for carry-on-sized toiletries in the United States are set by TSA. Toiletry size rules are consistent around the world. The rule for toiletries is ounce bottles or less (by volume) 1 quart-sized, clear, plastic, zip-top bag 1 bag per passenger
The Carry On Luggage Rules to Live By
How big can your carry on luggage be? How much can it weigh? Learn the carry on luggage rules for packing light.