A waterproof mattress pad is a protective cover designed to be placed on top of your existing mattress, providing an additional barrier against spills, leaks or accidents. Full definition
This twin size waterproof mattress pad and cover will make your life a whole lot easier. (pottytrainingconcepts.com)
If you have to change the sheets, here's a tip: Layer as many waterproof mattress pads and crib sheets on the mattress as you can. (babygaga.com)
While other waterproof mattress pads are made out of a type of plastic that can sometimes be uncomfortable and loud, this cover is made from strong, yet soft, bamboo fibers. (earlymomentsmatter.org)