Im curious what travel needs on a 737 trip would require the large international bag?

With the pub kits gone there is plenty of room for a generous piggyback bag for a 22" bag.

I ditched my crew bags wen i came bak to dom 737.hav used a 4 wheel 22" hard side bag and piggyback bag.

Save you back and shoulders. And make the van drivers happy while ur at it.