How strict is Ryanair with hand luggage?

Related questions

1. What size bag is allowed on Ryanair?
2. Can I bring a backpack on Ryanair?
3. Is a duffle bag considered a carry on?
4. Does Ryanair check weight hand luggage?
5. Does Ryanair charge hand luggage?
6. Are airlines strict with carry on size?
7. How do Ryanair check hand luggage size?
8. How many bags can you carry on a plane?
9. Is a backpack considered a personal item?
10. How much is hand luggage on Ryanair?

Tags

1. #transport
2. #allows
3. #allowed
4. #flight
5. #easyjet
6. #british
7. #ryanair
8. #international
9. #airways
10. #standard
11. #means
12. #association
13. #baggage
14. #allowance