This is a GREAT GREAT product. Don't know how my family and I went on Disney vaca's without it. It was right on the mark if not a pound or 2 off. We have had to open luggage at the airport and do a mad dash to organize to get it under weight. After that 1 encounter we vow for that to never happen again. It's genius, small and compact. A recent trip to Vegas we came back with gifts and knew exactly how much to pack in each luggage and everything was fine and underweight. So happy. Without this we would have over stuffed and paid a million in overage fees.