It is important when traveling with Ryanair or any other low-cost airline company to check the dimensions and weight of our hand luggage so as not to take any surprise upon our arrival at the airport: if the measurements are not those required by the airline, they can make us pay a fee that amounts to € 50 or, otherwise, force us not to transport our hand luggage. You have all the information in: «Dimensions and objects allowed in hand luggage on Ryanair«.
You have all the information in: "Dimensions and objects allowed in hand luggage on Ryanair".