The Silentnight Anti-allergy bundle is made up of 2 anti-allergy pillows, an anti-allergy duvet and an anti-allergy mattress topper all of which will help fight against bacteria and dust mites. The Anti-allergy pillow, duvet and topper are filled with anti-allergy hollowfibre that actively protects your bed from bacteria and dust mites. This helps to prevent allergies and keep your pillows, duvet and topper feeling fresh and clean, whilst keeping you comfortable for a restful night\'s sleep. Our anti-allergy fibres are approved by the British Allergy Foundation, which means they have the ultimate seal of approval. Our fibres have been scientifically tested and are proven to reduce or remove allergens from the indoor environment.