This may not be that new of a concept. But thought I'd give my tip.
Like many, J had to shop around for my favorite fit diapers. I had like 30+ different brand ones that I hated. Usually because they didn't seal well or stay up.
But I found a solution. I bought the adult reusable outer shells. For some, I cut off the side wrap parts and slid it into the reusable diaper. And for simple holding up, I just put it over the diaper. Both hold up so nicely. I'm more of a DL than AB, but I love the cute patterns.
I haven't seen anyone post this, so I thought I'd help out anyone like me who has unsuitable diapers.