In most cases, an airline will allow you to bring one carry-on baggage and one personal item. A personal item is normally something like a purse, laptop, backpack or camera case.
Personal items should always be small enough to fit underneath the seat in front of you. You may also be eligible to carry an umbrella, jacket or bag for an infant.
The maximum size for a personal item is normally 45 x 35 x 20 cm (18 x 14 x 8 inches). However, always check each airline's personal item policy before going to the airport.
Your personal item bag is ideal for carrying your important travel documents, electronics, wallet, keys, medications, glasses, books, hand sanitiser, etc, or anything else that you need easy access to during your flight.