Make your sleep experience a luxurious one with Beautyrest's advanced Black Hybrid Cx-Class 13.5" Medium Mattress. New cooling technology provides significant cooling power to keep you comfortable as you fall asleep and all night long. Multiple layers of Beautyrest's patented Aircool Memory Foam combine with Self-Response Latex to deliver superior comfort and exceptional support to create a first-class sleep experience that will leave you feeling invigorated to take on your day.