Kingston Hybrid Luxury Firm Mattress Introducing the Kingston Hybrid Luxury Firm Mattress, designed to offer exceptional support and comfort with its firm construction. Experience the perfect balance of luxury and firmness for a restful night's sleep. Mattress Highlights: Comfort level: Firm Style: Hybrid Cooling Cover: cooling technology for better temperature control. 15-year-prorated warranty. 2 Full Layers High-Density Super Soft Foam 1 Full Cool Gel Layer Ventilated Airflow Edges Foundation/box spring sold separately