Mattresses in a box are compressed, sealed and rolled, to ensure they can fit into a small (ish) package. When you unbox a mattress, the expansion period allows it to return to the initial shape.

We explore how long different types of mattress in a box last and what you can do to extend the lifespan of your boxed bed.

Where are the best places to buy a mattress? Consumer Reports' exclusive survey reveals standouts among online and walk-in ...