Serta is proud to be the manufacturer of the World’s Best Mattress. Serta is proud to be the number one mattress manufacturer in the United States, and a leading manufacturer worldwide. Here, you will find everything you need to know about our company. The complete Serta history is at your fingertips, as well as all Serta news. You’ll also find the latest Serta innovations that have made us a leader in providing comfortable mattresses year after year.