Designed for comfort from corner to corner, the generously filled quilted cover is enhanced with box-stitched edges and internal walls to keep the anti-allergy filling evenly distributed. This helps maintain lasting loft, edge-to-edge support and a consistently plump, supportive feel across the entire sleep surface.Our advanced anti-allergy fibres are approved by the British Allergy Foundation, carrying the ultimate seal of approval for trusted protection against allergens. Fully machine washable at 40°C, it's designed to help keep your bed feeling fresher, cleaner and more hygienic 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. As the UK's most trusted sleep brand, Silentnight brings over 75 years of expertise in creating premium sleep solutions designed to help everyone enjoy a deeper, more comfortable night's sleep.