Best Firm Mattress Toppers 2024. Bodily changes due to pregnancy, weight gain or loss, or aging can make a formerly comfortable mattress feel too firm. Most mattress toppers are designed to add cushioning, which is why so many are made from memory foam.

We test each topper on a medium soft (4) mattress, a medium (5) mattress, a medium firm (6). From memory foam to something cooling, these brands have the solution for a good night’s sleep