Pocket spring memory foam mattress: Grab yourself a deal on a 1500 pocket spring memory foam mattress. Mattress depth: Approximately 10 inches thick in total, including a 2 inch memory foam top! Inners: 1500 individual pocket springs help to support the pressure points in your body for a comfortable night's rest. Firmness: The mattresses are all of a medium firmness and are extra deep tufted, meaning they're of high quality and perfect as an all rounder for sleepers! Size options: Choose from six sizes, see below for prices. Hypoallergenic: Material is both hypoallergenic and dust mite resistant, so you can rest assured you'll sleep soundly.