I would think that the way the modern (disposable) incontinence products work, he would still be okay in that they soak up fluid in a chemical substance and eliminate wetness immediately. The disposable protective underwear
also have elastic leg gathers which should still help you somewhat. If those type products don't help try the attends super pads which should be worn with a tight brief which is sometimes called "mesh pants." You can find these items on most websites that sell incontinence products
. Good luck.