Now that most Pull-Ups, both for adults and kids, seem to be of the Granny-Panty style, it looks like the stretchy sides style is endangered (is it just DryNites/GoodNites now?)
I didn’t realise that this style had been around for so long though, as it isn’t obvious from the ad, but it looks like Peaudouce Up & Go pants were “Granny Panty” style even in the 1990s!