Opinions? 12-hour diapers..... really?

I recently discovered diapers that are sold as "overnight" or 12-hour diapers.
"Overnight"..... would imply that you can just let him/her keep sleeping undisturbed all night .... ?? 
This seems crazy.... 
Almost any baby will poop in a 12-hour period.  There's no such thing as a magical diaper that can safely or comfortably hold poop until morning.
.... Is there??

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