The two comfort layers of the Advanced Back Support Plus Mattress provide a firm feel for total body support. Our LURAcor™ foam gently uplifts your body into alignment and relieves pressure on your shoulders, hips, and knees. It’s also extra breathable, encouraging airflow to reduce heat while you sleep. A middle layer of premium, highly responsive foam feels firmer than traditional memory foam for additional support. This middle layer features precision-contoured zoned support, feeling softer under your head and legs and firmer under your core. An extra high base offers lasting stability for years of restorative rest.