Complete pillow protection against dust mites and other allergens that can cause allergic reactions. 50% cotton, 50% polyester jersey knit, coated with 100% vinyl for soft and quite comfort. Cool and breathable. Machine wash in hot water with or with out bleach and tumble dry. Fully zippered for greater effectiveness with a rust free zipper. Laboratory tested as an effective barrier to dust mite allergen transfer. Fits standard pillows. White. Effective for a minimum of 200 washes.