not something you buy all the time but cheap if you are looking for some.
Silentnight hollowfibre pillows have been designed to give protection against dust mites, bacteria and fungal growth. They are also non-allergenic which makes them a great option for allergy sufferers. These pillows have a cotton and polyester cover with a 100% antibacterial polyester hollowfibre filling for comfort. For added hygiene, these pillows are machine washable and suitable for tumble drying.