All-In-One provides maximum protection for your mattress and pillows against dust mites, pet dander and other unwanted allergens. We use strong, safe, and soft fabric, without sacrificing breathability and comfort. The All-In-One Copper Effects Collection features naturally antimicrobial copper. All products are water-resistant, stain-resistant, and hypoallergenic to keep your family sleeping safe. Zippered pillow protectors are sold as a 2-pack. We are so confident in the quality and durability of our products, that each purchase includes a 10-year warranty! Easy-care machine washable.