Getting Ready for Flight -- Part 1

I am able to fit everything I'm flying with into two luggage items (with the messenger bag as my carry on). One of my luggage items is a pretty durable duffle bag.

In this I fit my two panniers and the dry bag. Once I have it zipped up, it appears to be just a normal duffle bag, but when you go to lift it you find it isn't. On one trip I got a BE CAREFUL LIFTING tag in dayglo orange as a souvenir. I have to be very careful that it comes in less than 50 pounds or else I'll get a huge extra charge along with my dayglo orange souvenir.