For much of the same reasons to use a mattress protector, pillow protectors are a great way to keep your pillow fresh. They provide the extra layer between your pillowcase and pillow, meaning that your pillow is protected against sweat, allergens and other bacteria. For those who suffer with allergies, using a pillow protector will stop dead skin cells from getting into your pillow. These are typically what dust mites feed off, and can provoke allergies. Using a pillow protector will prevent the build up of dust mites which in turn should make the pillow last much longer. Alongside this, our pillow protectors are waterproof and will protect the pillow from any accidental spill.