Monarch Baggage Allowance

its limited to a case of up to 20 kg per adult, plus up to 5kg hand luggage per adult.

children or adults to receive the allowance if an adult paying full day (over 12 or 14, depending on booking) or half.

Note combining benefits and fewer cases with a total weight under the total allocation is often preferable, but do not forget the baggage is subject to size restrictions and security yet!

20 kg

As far as I am aware that it is 20kgs + 5kgs hand luggage x

As stated above 20kilos

usually 20 kg checked baggage and 5 kg of hand luggage, but your best to check with your tour operator that some allow only 15 kg and an additional burden for the 5 extra kg. your hand luggage is also only up to a certain size bag so you should check that as well as weight.