Silentnight Anti-Allergy King Mattress Topper - Thick Deep Mattress Pad Protecting Against Allergies and Dust Mites - Hypoallergenic and Machine Washable - King Bed, WhiteBACTERIA BLOCKER: Filled with anti bacterial, anti allergy fibres that actively protect against bacteria and dust mites, helping to prevent allergies and keep your bed feeling fresh and clean. REJUVINATING: Helps to rejuvenate your mattress by adding another layer of cushioned comfort. ANTI ALLERGY: Our anti allergy fibres are approved by the British Allergy Foundation, which means they have the ultimate seal of approval and are ideal for allergy and