Dive travel airline bag. This is my go to bag for dive travel. Holds all gear plus clothes and all other “essentials”. Easy to exceed 50 lb limit so buy and use luggage scale. Rugged construction, tough zippers and wheels. Extended handle is weak spot on older version. I have purchased 3 Caicos Cargo bags, and an earlier one lost one side of the slide. Don’t know why because it broke when I loaned it to a buddy. I replaced it with a new one (May 2019) and the handle seems to be better made. My first one (~ 10 years ago) is still in service. Although the “L” shape frame goes not collapse flat I have not experience problems stowing under bunks on liveaboards when it’s empty. I pack and use a mesh gear bag on day boats.Also use on non diving vacations. Although not not packed “full” internal straps secure contents and smaller compartments keep things secure and organized. All my rigid cases are in the attic getting dusty - except my pelican camera and housing case.