Atlanta-based Simmons Bedding Company is one of the world 's largest mattress manufacturers , manufacturing and marketing a broad range of products including Beautyrest ( R ) , Beautyrest Black ( R ) , Beautyrest Studio ( TM ) , ComforPedic by Simmons ( TM ) , ComforPedic Loft ( TM ) , Natural Care ( R ) , Beautyrest Beginnings ( TM ) and BeautySleep ( R ) .