Bacteria Blocker: Filled with anti-bacterial anti-allergy fibres that actively protect against bacteria and dust-mites helping to prevent allergies and keep your duvet feeling fresh and clean. Tried and Tested: Scientifically tested and proven to reduce or remove allergens that could otherwise be present in your duvet whilst also being effective against 99.9% of bacteria. Anti-Allergy Approved: 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 asthma sufferers. Ultimate Comfort: Comfort comes first made with the best quality materials and fibres for a great night's sleep. Machine Washable: Machine washable encased in a soft microfibre cover for great recovery wash after wash. Guarantee: 5 year manufacturer's guarantee and made in the UK. The Silentnight anti-allergy duvet is filled with anti-allergy hollowfibre that actively protects your duvet from bacteria and dust mites to help prevent allergies. Our anti-allergy fibres are approved by the British Allergy Foundation which means they have the ultimate seal of approval. It is also machine washable at 40°C which means you can keep your duvet fresh and clean for longer. Silentnight are the UK's most trusted sleep brand with over 75 years' experience in creating products to help the whole family get that 'great sleep' feeling.