In First and Business Class you may take two pieces of hand luggage and their contents on board with you. Economy Class passengers are only permitted one piece of hand luggage. Please check for possible country-specific variations to this general rule.
Ryanair: what size bag qualifies as hand luggage? - Telegraph Ryanair's historically stingy cabin baggage policy has been relaxed in recent years. As before, passengers are allowed to carry "one cabin bag per passenger ... #laptopbackpack