The Grand Island is the plushest mattress in our Signature collection, designed for those who want the ultimate in luxury, cooling, and pressure relief. It features a generous 4" pillow top layered with our Signature zoned latex and Signature cooling gel, creating a deeply comfortable surface that gently cradles the body while staying cool throughout the night. Beneath the comfort system, our QuadCore® pocketed coil system with TrueEdge360™ support provides stable, edge-to-edge support, allowing the plush comfort layers to perform without compromising durability or alignment. The result is an exceptionally soft, yet supportive sleep experience that feels indulgent from the moment you lie down.