A Positive Legacy: 80 Years of Sleep Wellness We are a 4th generation family owned, and operated company. Integrity is the foundation of our all we do. For 80 years we have been a trusted source of sleep wellness products and have kept true to our roots of producing higher quality products at a great value. We believe that sleep has the power to change our lives. It is the path to feeling more fulfilled and finding a deeper connection to the beauty of life. Diamond Mattress is dedicated to pursuing people-first innovation to improve life and transform our relationship with sleep. More than just making mattresses, Diamond is defining a better way to live by perfecting the art of sleep wellness.