I am on the hunt for a changing pad (that secures to a regular dresser with straps or some such...maybe even has some non-skid on the bottom?), but most of the ones I'm seeing aren't waterproof, and the ones that claim to be all seem to have a quilted pattern that I imagine would be kinda difficult to wipe clean. So I figured hey, no problem, I'll just get a waterproof cover! But I have yet to see a single one, other than liners that you just lay on top. Am I missing something? Where are all the waterproof products??? Everything seems to be made of cotton. Does anyone have one they can recommend?