Okay. I've researched this online and made quite a few phone calls. I found one place that might help, but, they only sell in bulk and to facilities. I'm trying to find a VERY thick, durable and waterproof mattress cover that will accommodate a rather thick mattress. (Not those thin, flimsy ones.) The kind I want isn't going to go for $19.00. More like $200.00.) I would also consider purchasing a mattress that comes encased with that kind of thing, but, they all appear to be uncomfortable and more like for a jail or juvenile. (Some are advertised as for bedwetters. The comments on this type say these mattresses are thin and more for a child, not an adult. So, they are not an option) My search for a mattress and/or cover, is for my LO who is fully incontinent and in MC. I want her to have as comfortable mattress as possible, but with waterproof protection. She has one now, but, it's not comfortable enough for her, imo. I have found one company online that has bariatric mattress covers, (she is not overweight), but, they seem to only fit thin mattresses. What heavy person would be on a thin mattress? Makes no sense to me. Plus, I can't tell what is really waterproof from the photo and description. Why is this search so difficult? With the number of people needing a product like this, why is it so illusive? I know that we can't post links here so, if you have a suggestion, could you PM me with it? I would appreciate any tips.