At more than 1,000 Mattress Firm locations around the country, shoppers sink into plush mattresses, recline on firm beds, and belly-flop onto pillow tops. Knowledgeable staffers can help customers create an ideal bedtime environment by dispensing advice based on sleep preferences and illuminating the difference between the many kinds of mattresses. And to the delight of their customers, much of Mattress Firm's bedding wears the label of a premium brand, such as Sealy, Serta, Simmons Beautyrest, or Stearns & Foster.