The Sealy Anti-Allergy Mattress Topper is filled with anti-allergy hollowfibre to offer added protection against bacteria to keep your bed fresh, comfortable and hygienic for longer. Anti-allergy hollowfibre technology works to remove all common bed bugs and house dust mites for a clean, fresh and skin-safe sleep environment. The mattress topper is covered in soft touch microfibre and finished with detailed edges and a satin sash label to represent our long-standing craftsmanship. Purpose-designed to transform your bed by adding an extra comfort layer with soft support. 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. Sealy is the world's number one bed brand. With a wealth of experience, we are committed to helping everyone enjoy the beauty of quality sleep.