If you have a platform bed or a slatted bed frame ... all prices shown are for a queen size.] Even though the term box spring is still common, modern box springs are more of a mattress foundation ...

A mattress rests on top of it, so you’ll need one that matches the size of the bed. The purpose of a box spring is to support a mattress and elevate it off the ground at a comfortable height.

Platform beds are a sleek-looking yet supportive alternative to traditional foundations (like box springs ... Nectar Luxe (Queen) Best Affordable Mattress For A Platform Bed: Brooklyn Bedding ...