Medium-firm mattresses generally fall within the 6-7/10 range on the firmness scale. These mattresses usually combine soft top layers with sturdier foundations of pocketed coils. This establishes a balance between pressure relief and support, which is appealing to a wide range of sleepers.
You are more likely to feel lifted up and out of the bed. Medium-firm mattresses can be great for combination sleepers or back sleepers, benefiting from a little extra movement.