The size and quantity of carry-on luggage that customers are permitted to bring on an Etihad Airways flight is referred to as the Etihad cabin baggage allowance. The allowance varies depending on the passenger's class of travel and the location, but in general it comprises one piece of cabin baggage for economy passengers weighing up to 7kg and two pieces of cabin baggage for business and first class passengers weighing up to 12kg. Also, each passenger is permitted to bring one personal item that fits under the seat in front of them, such as a handbag or a small laptop bag.
Source:- https://airlinespolicy.com/baggage-poli ... ge-policy/