This Munchkin Waterproof Changing Pad Liner is one of the most popular among the parent all over the world. (maternityfolks.com)
You might also accidentally spill the diaper contents and the waterproof changing pad will make it easier for you to clean it without necessarily having to heavy wash it as you would a cotton blanket that soaks up the pee. (thankyourbaby.com)
In such a scenario, the chances of a spillover are high and this is why you might need a waterproof changing pad. (thankyourbaby.com)