how much can a bag weight
The international size limit for carry-on luggage is 45 linear inches. This is the total of the length plus the width plus the height of the bag. For your convenience, most luggage manufacturers make carry-on luggage that measures exactly 45 linear inches. Your personal item may be up to 36 linear inches. The international weight limit for carry-on bags and personal items is 40 pounds. This includes the bag and all its contents. It is a good idea to weigh your carry-on bag before leaving home. If it is within 3 pounds of the maximum, remove some items. Airline scales will be more accurate than your home scale.