Serta's Perfect Sleeper X Max Plush Pillow Top 15"" Quilted Hybrid Mattress is cushiony soft with a pillowy, cloud-like top layer. It features five support zones designed for full-body spinal alignment with a combination of supportive coils and Perfect Conform Memory Foam. Sleep comfortably cool throughout the night with cooling technology and graphite-infused memory foam designed to redistribute heat away from your body. Plus, a layer of micro coils and a classic quilted feel makes for night after night of perfect sleep.