The Colebrook Firm Mattress offers solid support and cooling comfort with its innerspring design and upgraded cooling tick. Featuring Cool Gel Foam, Air Flow Convoluted Foam, and a foam-encased edge for stability, it delivers a firm feel from edge to edge. The quilt cover includes Dream Safe FR Fiber and Firm Support Foam, while a high-density coil system and support pad ensure lasting durability. Fits standard sheets and comes with a 10-year non-prorated warranty.