"Luggage allowance" refers to the maximum weight or number of bags that a person is allowed to bring with them when traveling, usually specified by an airline or transportation service. Full definition
Children enjoy the same hand luggage allowance as adults, so families can take advantage of the new fare by combining their allowances. (breakingtravelnews.com)
Now, cheap flights often advertise to passengers they get a free luggage allowance and the only thing you pay for is when you going over the limit. (comox-valley-tourism.ca)
If you're carrying diving equipment and you show your diving certificate at check - in, we'll give you an extra 5 kg luggage allowance free. (tui.co.uk)