From the #1 best-selling allergy bedding brand, the AllerEase Ultimate Cotton Mattress Protector delivers premium comfort and protection for a truly clean bed. This protector completely covers your mattress to block 99.9% of unhealthy household allergens -- like dust mites, pollen, and pet dander – and bedbugs from collecting in your mattress. The soft, 100% cotton jersey top has temperature balancing properties to insulate when you’re cold and wick moisture when you’re hot. Ultimate’s waterproof layer protects from spills and stains and antimicrobial product protection inhibits the growth of odor-causing bacteria, keeping your mattress fresher. It fits Twin & Full mattresses up to 14” deep, and Queen, King, and Cal King mattresses up to 17” deep. Ultimate Cotton can be washed in hot water for easy care and includes our lifetime warranty for peace of mind that you’ve made a clean, healthy choice for you and your family!