The Silentnight Auckland Ortho Kingsize Mattress is designed with those who experience back aches in mind. With a firm feel to give your back proper support, it is formed of a continuous spring with a unique shape that spreads your weight evenly across the bed. Plus its anti allergy, so perfect for asthmatics and other allergy sufferers. Part of the Auckland collection. Firm feel. Continuous sprung mattress. Damask cover with tufted finish. No roll together. Anti allergy. Mattress size W150, L200, D23cm. No-turn mattress. Rotate mattress regularly. Manufacturers 5 year guarantee.