The 13.5" Grand Hybrid Platinum models have been designed to give you unmatched comfort and unyielding support, all without any coils. Available in Firm, Medium, and Plush comfort levels, each model consists of our maximum cooling cover along with strategically placed layers of high-density foam, memory foam, and Serene® Foam providing for a truly unique sleep experience. Our integrated design allows for greater edge-to-edge sleeping and less partner motion disturbance allowing you to slip away to a blissful night’s sleep.