We've been testing beds for almost a decade, and Sealy has been making beds for over 100 years. Let’s find out how a legacy bed brand performs compared to other online mattresses.

The 10-inch Cocoon by Sealy Chill mattress has four layers. At the top is a breathable knit cover made with a phase change material that's cool to the touch. This helps to wick away sweat.

The support base is made of foam, whereas the Sealy Posturepedic Hybrid mattress has a pocketed coil base. The GravityLux’s cover has a type of pillow top design that the Sealy Posturepedic ...