Luna pillow protectors offer the latest in breathable waterproof fabric. Using our Luna Airflow Technology, air is able to pass through the protector, but harmful dust mites, bacteria and fungus are repelled. These protectors are great for allergy, asthma, eczema and rhinitis sufferers with their premium level of protection and ability to be easily washed with your bed sheets. Add our waterproof pillow protectors in conjunction with our mattress protectors for a better protected and healthier nights sleep. Utilizing a membrane fabric with a polyurethane breathable base layer, 99% of dust mites, bacteria and fungus are unable to pass through. This along with the hypoallergenic terry cover makes for a more sterile and natural environment for you and your family. Periodically remove the pillow protector and wash with your sheets for best results. Our pillow protectors work by using an exclusive hypoallergenic terry membrane bonded with a waterproof polyurethane base layer. To enable the pillow to still breathe, Luna utilizes an exclusive Airflow Technology made up of proprietary microscopic pores in the polyurethane layer. These pores allow air to pass through while preventing liquids from penetrating. A zippered design is then used to seal off the pillow and prevent penetration from dust mites, bacteria, fluids and other allergy triggers.