Firmness is a key factor when choosing a mattress. Your mattress must keep the body in a perfectly horizontal position, otherwise your muscles will be active and your sleep won’t be deep and restorative.
For each type of suspension, there are different levels of firmness*:
• flexible
• semi-firm
• firm
*Please note that the levels of firmness and their names may differ from one manufacturer to another.
A mattress’s firmness is chosen according to your height and weight. If you are tall and stocky, the mattress should be firmer. If you are lightweight or buying a mattress for a child, choose a softer mattress.