I’ve been sleeping on a Helix Twilight Luxe mattress for over a year now. As soon as I lie on it, I instantly feel pampered. It has retained the same level of firmness, there are no dips in it, and I sleep very well. This mattress is firm but the luxurious layers prevent the hip and back pressure I’ve felt with other firm mattresses. No squishy pillow top, just high quality layering that provides great comfort and support. I love it so much that I bought a second one for another room!