Reusable Underpad Cardinal Healthā„¢ Essentials 36 X 54 Inch Polyester / Rayon Moderate Absorbency ReliaMed reusable underpads have a PVC-coated backsheet that protects surfaces from stains. The backsheet material is skid resistant to prevent the underpads from slipping. The underpads are made of high-quality fabric that retains its efficiency after many washes. The top sheet wicks moisture away from the skin to keep you dry and protected. The waterproof underpads have a poly/rayon core that offers a moderate absorbency and helps eliminate odors. 1 Each