Cathay Pacific Airlines allows passengers to bring carry-on baggage on board, with specific allowances depending on the travel class. For Economy Class, each passenger is permitted to carry one piece of cabin baggage with a maximum weight of 7 kilograms. The dimensions for this carry-on item should not exceed 56 centimeters in height, 36 centimeters in width, and 23 centimeters in depth. For Premium Economy, Business, and First Class travelers, the allowance typically includes two pieces of carry-on baggage, with the same weight limit of 7 kilograms per piece. In addition, passengers are permitted to bring an additional personal item, such as a laptop bag or handbag. These allowances are subject to change, so it is advisable to verify the most current information on the official Cathay Pacific website prior to travel.