The Allerban fibre fill incorporates an active ingredient which prevents the build up of microbes & dust mites in the fibre helping ensure the pillow remains a hygienic & hypoallergenic product. The filling inhibits the growth of common fungi & bacteria, thus making it an ideal choice for allergy sufferers. Allerban fillings have been thoroughly tested in accordance with all health & safety requirements & pronounced safe in every respect. The active ingredient is a tried & tested technology which has been EPA registered since 1976 & has been used safely for over 30 years in other domains. The pillow comes filled with thousands of tiny, soft Comforel Allerban fibre balls to mould to the shape of your head & neck all night long & adjust to your movements while you sleep. Please note, unfortunately we cannot deliver this item to the Channel Islands.