The AllerEase Waterproof Protector is such a great item to have. After a couple of days of trying this product I could tell a difference. This product is comfortable on my matress and it fits very well.  Nonetheless, it does work with my son because I allowed him to sleep on bed and it was great because of his allergies. Overall, such a great product, I don't know about the waterproof but other than that awesome product. I loving it . I have a good night rest and definitely not sneezing and dusk.