Sam D, London UK
I have used this two ways- as a foot rest for myself on an international flight, and as a seat extender when traveling with my toddler.
The newer version is an improvement on the original. It has better seams and also a nice cover for the foot rest so you aren’t putting g your shoes directly on it.
It folds up small and fit in my carryon. Blowing it up was a little of a hassle because the new Delta planes have nozzles that don’t put out enough air so I had to manually blow it up. My toddler just laughed at me.