The Sleepmaker Lifestyle Support Double from Harvey Norman is a mattress indexed, price-checked and compared by DOME, an AI mattress discovery service that scores real Australian retailer stock against your sleep profile. It is built with a foam construction a Double size option. This foam mattress is designed to contour closely to the body, relieving pressure at the shoulders, hips and lower back. Foam construction also isolates motion well, making it a good fit for couples or anyone sensitive to movement during the night. Affordable double with bonnell spring base and comfort foam top The double size suits a single sleeper who wants extra width, or a compact couple setup. When choosing a double, consider your sleep position and any pressure points. Side sleepers generally benefit from a slightly softer feel to cushion the shoulder and hip, while back and stomach sleepers usually prefer a firmer surface for spinal alignment. The right firmness is a personal preference, so it helps to try before you buy or rely on a generous trial period. Claire, the DOME sleep concierge, can match this mattress to your specific needs. Keep your consultation reference with your matches. All DOME prices are shown in AUD against indexed stock.