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.

We found the best sales on mattresses at Amazon, Wayfair, Mattress Firm, and more ahead of the New Year. Save up to 64 percent on memory foam, hybrid, and gel foam mattresses from top brands, ...

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.

With so many Christmas deals live this week, there's never been a better time to shop for a bed featured in our best mattress guide. One of our favorite sales this week comes from Serta.