Ryanair say you can pay for and take 3 X 20kg check-in bags the dimensions of which should not exceed 119cm X119cm X 40 cm. They don't specify whether the dimensions are for one bag or whether for three bags. Would anyone who has used this baggage service with this airline, please help clarify as I don't want to get caught at the airport. Ryanair are notorious. TIA

try tweeting them, normally respond very quickly, beats emailing them.
@Ryanair

You are allowed 3 bags of up to 20kg each or 60kg total (ie 1 x 20kg, 1 x32kg, 1 x 8kg) with a single max of 32kg, and each individual bag can be a maximum of 119cm x 119cm x 81cm inc any bits that stick out like handles,wheels etc.

Perhaps also worth mentioning that their policy, at least a couple of years ago, was to accept up to 20.9kg at check-in even though they say 20kg.

Thank you el barto & DLC. I managed to get in touch with Ryanair and they confirmed as you've said Appreciated.