The butterfly contour defines the shape of the Melara Max, but it is the material at its core that determines its performance. The pillow utilizes high-density memory foam — a viscoelastic polyurethane foam engineered to respond to both pressure and temperature. Unlike the low-density foams found in budget pillows, high-density memory foam possesses the structural integrity to maintain its form night after night while still providing the conforming comfort that makes memory foam desirable.