Simmons Beautyrest mattresses are designed, tested, and manufactured in the USA and are known for their innovative technologies. They use a variety of materials to regulate body temperature and promote airflow, including AirFeel foam, AirCool gel memory foam, and SurfaceCool fibers. The Beautyrest Black Collection offers even more advanced cooling technology, with models featuring Micro Diamond Memory Foam and SurfaceCool Plus Fiber.