Why choose one kind of disposable underwear for incontinence over another? Partly because of personal preference. If pull ups work for you and you like them, for instance, then that is what you should use. Sometimes, fit can be an issue and then you may need something a little more adjustable such as a belted undergarment. Or, if you are taking care of someone else and you need something that’s easier to get on and off of them, that is another consideration.