New. They have been washed. They do not work for my DUCK feather pillows. 88% Polyester, 12% Nylon ADVANCED ALLERGY PROTECTION AllerEase pillow protectors have tightly woven, expertly-designed fabric to prevent unhealthy household particles from collecting in your pillow. EXTEND PILLOW LIFE Fully encasing your pillow with a durable and comfortable zippered protector extends the life of your pillow by keeping it fresh and clean. BREATHABLE FABRIC Made of breathable fabric that won’t alter the feel, these protectors are soft to the touch. Plus, they do not retain heat, so you can get a comfortable and allergy-free night’s sleep. QUIET NIGHT With a soft, quiet cover AllerEase pillow protectors help you sleep comfortably through the night. ALLERGIST RECOMMENDED All AllerEase products provide clean allergy relief, are machine washable, and have a Lifetime limited warranty