The exclusive Charter Club by Sealy Blissful Bay medium Euro top mattress features trusted Sealy® quality with an upgraded high coil density pocketed spring support system that has reinforced steel Quantum Edge® coils. Its heavy-duty pocketed springs reduce movement, allowing for an undisturbed side-to-side sleep while layers of Perpetua™ copper latex and gel foams offer pressure relief and comfort. A stretch knit cover with cooling fibers and Lurex® metallic thread accents helps you sleep better.