I've booked some Ryanair flights for June (Stansted-Tampere, Stockholm-Lubeck and Lubeck-Stansted). I am puzzled about the cabin baggage allowance - Ryanair say the dimensions should be no more than 55 x 40 x 20 cm, but I can't buy any luggage to these specs - most cabin bags seems to be at least 23 cm wide. Do Ryanair actually mean that dimensions should add up to 115cm, like most of the other airlines?

And what about things that most other airlines accept in the cabin - duty-free bags, small handbags, coats, etc? Are they allowed or not?

Thanks for any advice.