Cool gel memory foam, phase change technology, and active air technology give the Fantasy Hybrid King Mattress a continually cool, revitalizing feel. Across the entire sleep surface 2.5" micro coils provide surface layer support and comfort with independently working coils, higher-guaged in the center, to minimize shared movement. The SuperEdge Plus gives the entire mattress a comfortable edge and its copper infused latex gently lifts your body for a light, floating feeling to help relieve aches and pain.