The only water resistant mattress pad to optimize airflow while protecting your mattress. Receive a 10-year limited warranty to protect your new Sleep Number mattress from almost any stain. Breathable design enhances the performance our Climate smart beds so you enjoy all its benefits for a restful night’s sleep at just the right temperature. Water resistant; designed to repel liquid on contact. Innovative, absorbent core locks in moisture for quick and easy cleanup from spills and accidents. Caring about the planet and you. Learn more about our responsibly-made bedding . Law Labels: A law label is a tag or label required by some states to inform consumers of filling materials used in bedding, furniture and other products. .