-Protects Against Dust Mites， Fluids， Urine， Perspiration， Allergens And Bacteria (3-Year Warranty)-Ultra-Thin Knitted Polyester provides a smooth surface that stretches and contours with the body-Great For Those With Kids， Pets， Allergies， Asthma， Eczema Or Incontinence-Will Not Change The Feel of Your Mattress (Registered With The FDA As A Class 1 Medical Device)-Fitted Sheet Style Design (Fits up to 18")