Traveling is a filthy sport, no matter how you want to see it. Nothing will make it germ free if the H bag will go on travel, that's the reality.
Avoiding damage, stain and scratches is a reasonable goal to have.
1. Take a large garbage bag with you - That will be my idea
in expensive, disposable and good for rain/bad weather.
2. A Tumi Tumi Just in Case Tote
External Dimensions in Inches: 14" x 23" x 9"
I have an older version but I think the item should be great at least as a sleeve type
to navigate through flight bins.
And yes, bins are filthy because I use a wheeling boarding tote for example that goes
from the floor to the bin
, especially wheeling computer bags are filthy too
The foldable tote is similar like a Longchamp item, but I guess even more foldable and
less expensive.
3. I would think one of those recyclable oversize grocery or big gift bags to promote "green" should do the trick too...I know they are available, large printed
laminated shopping bags