Receive a 10-year limited warranty to protect your new Sleep Number mattress from almost any stain. Waterproof, stain protective surface extends down the sides for greater protection against liquids and spills. Antimicrobial to help keep your bed clean and odor free. Cool-to-the-touch sleep surface allows heat and humidity to escape while preventing moisture from getting in, for ultimate comfort. Designed specifically for your Sleep Number® bed with a conforming fit that moves with you. Hypoallergenic for allergy-sensitive sleepers. Logic™ Label makes it easy to make your bed, right from the start. Caring about the planet and you. Learn more about our responsibly-made bedding .