Crafted by the mattress specialists at Silentnight and using space-age technology developed by NASA, the Silentnight Memory 3-Zone mattress is one of the leading mattresses of its type on the market today. Incorporating a combination of Responsive Memory Foam and Supportive Reflex Foam, it reacts to body heat and moulds to the sleeper�s form, offering complete support all along the body regardless of your sleeping position.This clever mattress adjusts to your body by reacting to heat and moulding to the shape of your body, regardless of your position, which also means movement transference is minimised and there is no roll-together. The mattress is made in the UK and has been approved by the National Bed Federation. The Silentnight Memory 3-Zone mattress is vegan friendly and is fire resistant, making it suitable for domestic use.The key to this mattress�s unrivalled support is the unique 3-Zone Sleep system, which combines layers of different types of memory foam, including a deep layer of visco-elastic foam, which cradles and supports every part of your body. This minimises movement and providing you with a more restful night�s sleep with fewer waking periods.The Silentnight Memory 3-Zone mattress is hypo-allergenic and dust-mite resistant, and has been given the seal of approval by Allergy UK. That makes it ideal for those suffering from respiratory conditions triggered by dust, and for anyone who suffers from allergies.Unlike regular mattresses, this memory foam mattress arrives vacuum packed and rolled, so it�s easy to get up tight stairways and along narrow corridors to the bedroom! Once unpacked, leave for 48 hours to allow the memory foam to regain its form. As this is a single sided mattress there is no need to flip, but we do recommend rotating occasionally to prolong the lifespan.