The Outlast Trio Ultimate memory mattress is the ultimate memory foam mattress, not only is it extra deep at 27cm but has an amazing 10.5cm of 3rd generation memory foam. Covering the Outlast Trio Ultimate is the revolutionary Outlast material, naturally regulating the temperature of the mattress so it is not too warm, not too cold but just right. The advanced Outlast Adaptive Comfort Technology which works with the memory foam to regulate the temperature of the mattress and improve comfort. This prevents you feeling too hot on the mattress by absorbing excess heat, storing it and releasing it to the body as it is needed. The Outlast Trio Ultimate has 2 deep layers of memory foam the top layer is constructed with soft highly resilient 3rd generation memory foam and is 6cm deep, the second layer of memory foam is firmer to offer extra support and is 4.5cm deep. Supporting both layers of Memory Foam is a strong and supportive 16.5cm layer of breathable reflex orthopaedic foam. Covering the mattress is a luxury knitted Double stretch Outlast cover. To aid movement the cover incorporates 4 grip handles and to keep the mattress ventilated the cover also includes two air holes. The memory foam in the Outlast Trio Ultimate mattress is temperature sensitive, reducing pressure on the body and increasing blood circulation. All parts of the body including the small of the back are properly supported, with the spine in a natural position helping to take the care of aching joints, muscles and circulation. As an added benefit the two Memory Foam layers have castellated groves to offer a subtle massage effect along with the added benefit of improved ventilation. The Outlast Trio Ultimate mattress is sanitised and hypo-allergenic, meaning no dust mites or air bourne allergies can reside in the mattress, ideal for Asthma and allergy sufferers. As an added benefit the mattress is non turn although does have grab handles should you need to move the mattress. The mattress is protected with a manufacturers 5 year guarantee.