i wear 24/7 and never had a problem when flying with tsa. never had the past down. i always have 2 or so extra diapers on carry on never checked they pass x-ray just fine. but i try to go in dry or almost.
Whelp, myself and several other authors have started receiving removal notices. I did put an appeal in, but I doubt it's successful. For now I'll keep posting LCW there since it doesn't seem to have attracted that attention yet, but I'd bet it's a matter of time. (I hate that, I really do think it's easier to read stories on that site!)
https://www.xpmedical.com/xp-apc-19800-config-xp
I can't speak to it being the softest but this is definitely one of the biggest that I know of.
Tykables had a very soft booster. Full disclosure. I have not purchased them in their new configuration
https://tykables.com/products/dubbler-booster-pads
I would start with those.