Phase Change cooling fabric for an ultra-cool sleeping surface. The fabric is very cool to the touch, even through your sheets. Two layers of Soy based comfort foam for a more natural sleep. Individual pocketed coil that adapts to various builds of sleepers. Provides support, as well as, pressure relief. Minimal motion transfer. All the benefits of memory foam but using springs! Quantum edge support for a reinforced edge using springs versus a foam tub. This allows for maximum breathability to keep the mattress cool and fresh. Reinforced lumbar for additional support. 10 year prorated limited warranty (see sleep specialist and warranty card for details.) 365 day comfort guarantee.