Beautyrest's advanced Black C-Class 13.75" Medium Mattress offers to elevate your sleep experience to new heights. A cool sleep surface is provided by exclusive cooling technology that helps to keep you comfortable as you fall asleep and stay asleep through the night. Superior comfort and exceptional support are delivered by a luxurious cover, layers of Beautyrest's Firm Comfort Foam and Zoned T3 Pocketed Coil Technology, creating a first-class sleep experience that will leave you feeling invigorated to take on your day.