The Helix Moonlight Luxe is a premium soft mattress designed for back & stomach sleepers to help relieve back pain and achieve deep, restorative sleep. Our SupremeSupport 4.0 Memory Foam (4x denser than typical mattresses) works with zoned lumbar support to keep your spine aligned and your lower back and hips elevated, so you wake up feeling great. On a scale of 1-10 where 10 is the firmest, the Helix Moonlight Luxe feels like a 3: plush and gently responsive.