Hi g,
That's sort of two different things there........concealment and support.......and depends a bit on your output type and frequency. The best way to conceal would be with a light wide wrap or fabric, like what Alex references. But support is different, and it depends if you mean keeping your barrier tight to your abdomen or supporting the weight of a full bag. For the former the belt that comes with your barrier should provide all the support that's needed, and there are wider belt options from other vendors if needed. For supporting the weight of a full bag, something like a Stealthbelt would do the trick. Just remember you can't see thru it or even feel how full your bag really is, so you may need to check it routinely if you have high output, or ate a lot. The horizontal Stealthbelt would be less conspicuous until your bag gets full, but wouldn't be a good choice if you are high output or have liquidy output. Then the vertical is a better solution to keep your output off your barrier........but it will hang lower and be more easily seen if your shirt or blouse is short. And if you like to wear shear fabrics they'll still be able to tell with either one......unless you have other lumps around your midsection!! For me, who has to empty my bag often, I find something like Stealthbelt just another step I have to go thru to empty, and not really worth my time. Again, not a problem if you only empty it a couple times a day, but for others with higher frequency......it's just more work. The cheap-o way to support a full bag and help with detection is to tape the top of your bag to your abdomen (when it's empty), so when the bag gets full it won't pull the top of the bag down and forward and show thru your shirt. Decisions, decisions.....right?
;O)