I have a special needs adult son who is incontinent at night. And the boy can flood a bed. And night two, of having this protector, on his brand new mattress, he did. I  thought for sure “another mattress ruined!” BUT NO! I removed the protector, and swiped my hand over the mattress, only to find it COMPLETELY DRY!!! I was shocked! And thrilled! After countless ruined mattresses over the years, this was a huge victory! I’d give this product ten stars if I could! If my story sounds familiar, definitely give this mattress protector a try! You won’t be disappointed.