"Prevail Premium Nexus Underpad 30"" x 36"". Prevail Nexus Underpads consist of three integrated layers. The heavyweight bonded top sheet provides exceptional strength while providing softness against the skin. A fluffy super absorbent inner layer quickly pulls and locks up liquid away from skin. The outer fabric is water-proof to trap liquid or materials from passing through the underpad. Reduces the need for multiple underpads."