Consists of an inert topsheet layer which can come into contact with the bodyAn absorbent middle layer made of cellulose fluff pulp and super absorbent polymer to capture body or medical fluids, and usually a fluid-proof backing layer made of polyethylene or polypropylene to protect bedding or underlying surfaces. Features: Underpad Blue 30 X 36 Inch Disposable Fluff / Polymer Heavy Absorbency