From the #1 best selling allergy bedding brand, AllerEase 100% cotton pillow protectors delivers the clean, healthy night's sleep that we all deserve. Featuring 100% cotton and an expertly-designed construction. Made of 100% breathable cotton, these pillow covers are soft to the touch and do not retain heat, so you can remain cool and comfortable all night long. Machine washable. AllerEase offers unmatched comfort, quality, convenience, and value for you and your family.