Carefully constructed as a stronger, more durable and supportive mattress set, this orthopedically designed double-sided profile boasts an eco-friendly natural rayon cover and extended life.  Construction features a 416-13 gauge heavy duty, high-profile tempered steel Bonnell innerspring unit with 14 double cup edge supports, insulator pads, and 3″ 100% Dunlop latex with extra firm HD foam.