I'm a little unclear on what you're thinking of buying -- baby diapers or something like GoodNites/DryNites, perhaps? I have a 38" waist, and all of these things are, at best, tight and low on me. I like them very much, but using them requires some dedication and the ability to ignore their shortcomings. If you're looking for function, you're obviously going to be better off with whatever adult options are available, even if they're not a well-known brand like Tena.