The Dormeo Octaspring� 5500 mattress is an affordable, firm mattress created using the unique Octaspring� design. These clever little foam springs come in different densities to form a multi-layer matrix that includes additional layers of memory foam and Ecocell foam. The structure responds to your body, moving with you and moulding to your shape, cushioning and supporting all night long.This mattress comes with an extended 15-year warranty and 5-year guarantee, giving you 20 years of trouble-free sleep. It has been approved by the National Bed Federation and also conforms to the BS7177: 2008 standard, so it�s perfect for use at home. The hypoallergenic nature of construction and the materials used make it great for anyone who suffers from allergies or breathing problems such as asthma that are triggered by dust mites and bacteria.It�s a small thing, but it�s one of the reasons why the Octaspring� mattress range is so popular with customers! When laundry day arrives, all you need to do is unzip the super-soft Superstretch cover, pop it in the washing machine at 30�, and wash it as you would your sheets! Thanks to the fact that it�s up to 50% stretchier than normal fabrics, the cover is easy to put back on too, so you have a clean, fresh bed to snuggle up in.If you suffer from back problems, you know that a firmer mattress offers greater support. The trick is to combine those orthopaedic levels of support without creating pressure points at key areas such as the hips, shoulders, and along the spine. The Octaspring� design of the 5500 cradles the body to keep the spine in a neutral position. This makes the mattress particularly good for people who sleep on their back or their front.Unlike double-sided mattresses, there�s no need to flip and turn this single-sided design. That makes it much easier to care for with no loss of performance. However, we do recommend that you turn it from top to toe occasionally to keep it in tip-top condition. To help you do this, you�ll find �hidden� handles underneath the 5500, so rotating every few months is done in seconds.