Recently Ryanair added new 10kg checked in baggage option. I have a bag that bigger then their 55x40x20cm cabin policy (something like 60x35x20) so it wouldn't pass as cabin bag. But dimensions for check-in bags (at least 20kg option) are 81x119x119.
Is it okay to buy 10kg checked-in baggage (my baggage will not exceed 10kg)? Or should I buy 20kg bag because of dimensions?