This luxurious pocket sprung mattress features maximum surface support and hi-tech ErgoSense that adapts to your body pressure providing instant soft comfort. 5 Year Warranty. Pressure Relieving Ergosense . Pocket Springs. 25cm mattress depth No Turn Mattress - rotate regularly to extend the mattress life & performance Mattress Dimensions Single - 90cm (w) x 190cm (l) x 25cm (h) Small Double - 120cm (w) x 190cm (l) x 25cm (h) Double - 135cm (w) x 190cm (l) x 25cm (h) King - 150cm (w) x 200cm (l) x 25cm (h) Super King - 180 (w) x 200cm (l) x 25cm (h)