From Beautyrest, the Harmony Lux Hybrid 13.5" Empress Series L1 Firm Mattress Collection delivers modern technologies for a truly restorative sleep in a mattress that is ideal for back and stomach sleepers. Proprietary ContourFit® Design construction provides for a responsive sleep surface across the mattress while exclusive dual strand T2 Pocketed Coil® Technology delivers targeted support throughout the night. A combination of Beautyrest® Gel Memory Foam, Firm Comfort Foam and InfiniCool® Plus deliver exceptional pressure relief and a cool feel, allowing for a deeper, more comforting sleep.