Get the best possible sleep with the Triple Z cotton quilted king size waterproof pillow protector with zippered closure. Featuring a soft cotton quilted sleep surface dust mite protection and a machine washable design. The traditional cotton quilted keeps your mattress stain free as well as hypoallergenic. Great for extra comfort due to the cotton padding. Electric blanket safe fits all standard & extra depth mattresses. Machine wash & tumble dry. Triple Z Mattress & Pillow Protectors will protect your mattress & pillow from spills & stains. They also provide an allergy barrier protecting you from any allergens such as dust mites & bacteria that may be present in your mattress.