Your hand (carry on) and checked baggage allowance is determined by the airline operating the flight.
The policy for suitcase sizes for cabin luggage and checked bags always depends on the airline that operates your flight - usually one piece of hand luggage with a maximum weight of 6kg and dimensions that do not exceed 55 x 40 x 20 cm and checked baggage with a maximum weight of 20kg.
Liquids carried in the aircraft cabin must be carried in a transparent plastic bag - maximum capacity 1 litre - and no container may hold more than 100 ml. Liquid containers larger than 100 ml must be placed in checked baggage.
At the airport:
Prohibited hand baggage items: