When placed on a source of allergen such as upholstered furniture or carpet, these pads act as a protective barrier between you and the allergens. They are useful for an allergic person sitting on a couch or for a child playing on the floor. They can also serve as a wipeable barrier to protect beds or furniture from wandering pets. And because pets themselves can be allergic to dust mites, they are Allergy Approved® for use as pet beds or crate liners, to shield pets from mite allergens. Water-repellant yet easily machine washable, allergen-proof microfiber is Natural on one side, Blue-Gray on the other (matching our comforters, bedskirts and shams), quilted over an interior batting. 100% Polyester.