The Silentnight Anti-allergy pillows are filled with anti-allergy hollow fibre that actively protects your pillows from bacteria and dust mites. This helps to prevent allergies and keep your pillow 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. These medium support pillows are ideal for people who sleep on their back or side and are encased in a soft touch microfiber cover that is both soft and easy to care for and will keep you relaxed and comfortable throughout the night. The pillows are made right here in the UK and come with a two-year manufacturer's guarantee so you can sleep soundly with your purchase. Anti-Allergy pillows have been treated to combat dust mites making them the ideal choice for everyone with allergies or asthma. They are also machine washable at 40°C which means you can keep your pillows feeling fresh and clean for longer. This product contains a biocidal ingredient with anti-bacterial properties that protects against fungal growth. The active ingredient is Dimethyloctadecy (3-(trimethoxysilyl)propyl) ammonium chloride. The Anti-Allergy Collection also includes duvets and protectors for a fresh, clean and comfortable night's sleep.