Relieves pressure points and prevents joint pain. This Zero Gravity reflex foam Mattress comes vacuum packed and rolled to help save space. The Mattress contains a 15cm (approximately) layer of best graded reflex foam that will respond and adapt to the contours of the user's body, providing unmatched support and evenly distributing weight to prevent roll-off and roll-together. Rigorous tests and measures are undertaken regarding: Body and spinal support, Durability, Ease of turning, Stability, Permeability (Dealing with moisture), Ease of use. These tests simulate years of mattress use and help you to choose a mattress that will feel just as comfortable in the future as it will on its first night of use. Single mattress is suitable for Adults, Children, Bunk Beds, Cabin Beds and standard divan bases. Note: All mattresses are delivered vacuum packed and rolled. Please note mattresses have to be unpacked as soon as received due to them being highly compressed, please allow 24-72 hours for the mattress to settle back to its original shape. We advise customers to open the mattresses as soon as possible and rotate regularly for even wear. Mattress Firmness: Medium.