Combining over 60 years of experience in manufacturing premium quality mattresses with space-age technology developed by NASA, the Silentnight Memory 7-Zone mattress is one of the most responsive mattresses on the market. It uses multiple layers of memory foam to form a medium to firm mattress that provides orthopaedic support and minimises pressure points.The Silentnight Memory 7-Zone mattress is approved by the National Bed Federation, and is made in the UK. It is fire resistant and suitable for domestic use. For total peace of mind, the mattress comes with a 3-year guarantee. It is approximately 20cm deep, making it one of the deepest memory foam mattresses on the market. It is a single-side mattress, meaning there is no need to flip it, although we do recommend that, to prolong the life of the mattress, you rotate it �head-to-toe� regularly. This will not affect the mattress�s unique zone sleeping system.Using a zonal system to deliver maximum support along the whole of your body, it combines layers of Responsive and Supportive Reflex memory foam to create a �cradle� effect that supports every part of you, no matter what sleeping position you prefer. The memory foam moulds around you, minimising excess movement without feeling restrictive, giving you a more restful night�s sleep.No more struggling around staircases and along narrow corridors with bulky mattresses and manhandling them through doorways! The Silentnight Memory 7-Zone mattress comes vacuum packed and rolled in a box, so all you have to do is carry it upstairs, unbox it, and leave it for 48 hours to regain its normal shape.This mattress has been approved by Allergy UK and is ideal for asthmatics, those who suffer from allergies, or anyone who prefers a more hygienic sleeping environment. The soft quilted cover can be easily removed for cleaning. The mattress is both hypoallergenic and dust-mite resistant.