Though they've been around for over 70 years, Sealy has put a modernized touch on their work, which is clearly reflected in their branding. Their products and manufacturing processes are more contemporary when compared to other brands. They are widely known for the Sealy Posturepedic mattress, and are also owned by Tempur-Sealy International, Inc.
From the Sealy Cocoon mattress website:
NOT ALL MATTRESSES ARE CREATED EQUAL. OUR QUALITY TESTING IS UNMATCHED.
Our flagship testing center in North Carolina performs proprietary and patented tests to ensure Sealy’s mattresses exceed standards and are built to last. Our mattresses are tested for durability, comfort life, safety/flammability, and even the effects of packaging, shipping and handling.