Indicates the main composition of the mattress, such as innerspring or memory foam. Some so-called "hybrid" innersprings include one or more levels of foam on top.

Indicates the main composition of the mattress, such as innerspring or memory foam. Some so-called "hybrid" innersprings include one or more levels of foam on top.

Modern mattresses like the Sealy Posturepedic Hybrid offer high-tech sleeping solutions geared toward getting you or your ...

So when I had the chance to test out Cocoon by Sealy's The Chill Hybrid mattress (from $839; $539), which is designed to keep you both cool *and* comfortable all night, I jumped on it. The hybrid ...