100% Cotton Ultimate Coverage: This total encasement system features zippered closures and heavy duty seams to keep your pillow completely covered, and to help keep you and your family free from dirty bedding. Maximum Protection: Pillow encasements add an extra layer of protection from dirt and moisture and securely hold pillows in place through the night for complete security. Universal Coverage: Extend the life of all your pillows as our pillow covers are suitable for down, foam, and down-alternative pillows. Ideal Fabric: The pillow protectors boast 200-thread-count and are 100% cotton with no plastic feel or crinkling sound. It's quiet and doesn't make unwanted noise while you sleep in your bed. Great Fit: Our standard pillow protector measures 20" x 26", great for all standard size beds, and is machine washable and dryable.