Children's tickets enjoy the same free baggage allowance as adult tickets (Spring and Autumn 15 kg).
You two weigh 40 kilos.
Knives, swords, nail clippers and small scissors must be checked, otherwise they will not pass the security check, and liquids cannot be carried with them, so they can only be checked.
Overweight baggage fee = full-price ticket in economy class × 1.5% × overweight.
If you are overweight, you can stay with those who have not reached the baggage allowance without paying the excess baggage fee.