Firmness is subjective and closely tied to body weight. Most manufacturers use a 1–10 scale:
Need a firm surface (Innerspring or Firm Hybrid) to prevent the hips from dipping, which arches the back uncomfortably. 2. Understand Material Benefits how do you know what mattress to buy
Need a softer to medium-firm feel (Memory Foam or Hybrid). The mattress must contour to the shoulders and hips to prevent joint pain. Firmness is subjective and closely tied to body weight
Offers a traditional bouncy feel and excellent airflow. It provides strong edge support but less contouring. how do you know what mattress to buy
The "feel" of a mattress depends entirely on its construction: