A pocket spring mattress with memory foam, Posture Perfect by Duroflex combines the latest orthopedic technologies to help your body unwind at the end of a long day. The core of the mattress features a 3-zoned pocket spring layer, which gives the mattress just the right amount of firmness and bounce. Meanwhile, our exclusive 5-zoned Certified Orthopedic Support, which has been certified by the National Health Academy, offers specialized support to each of the five zones of your body, resulting in the correct alignment of your spine.