Of course, at the end of the day, our impressions are wholly subjective: If possible, it’s still best to try out a mattress in a store before you make up your mind. The Serta iComfortEco ...

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.

Check out our best mattress for couples guide. Best firm While the Serta iComfortECO comes in soft, medium, and firm, I tested it in firm to fill some holes in our coverage. I've only tested one ...