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.

including the Posturepedic Hybrid mattress, as of Cyber Monday. Our tests showed: We surveyed over 500 owners of a Sealy mattress and many reported that the hybrid model offers enough softness and ...