Firm vs Medium vs Soft: Which Orthopaedic Mattress Is Right for You?

23.April.2026 0 comments

Understanding the Firmness Scale

Mattress firmness is typically rated on a scale from 1 to 10, where 1 is the softest and 10 is the firmest. For practical purposes, most quality orthopaedic mattresses fall into three broad categories: firm (7 to 9 on the scale), medium (4 to 6), and soft (1 to 3). Some manufacturers also use terms like medium firm or plush to describe points between these ranges.

It is important to note that firmness and support are not the same thing. A mattress can feel soft on its surface while still delivering excellent support through its internal construction. Understanding this distinction is key to making a smart choice.

Firm Mattresses: Who They Suit

A firm orthopaedic mattress provides minimal contouring and maximum resistance. When you lie on a firm mattress, the surface pushes back evenly against your body, keeping you elevated rather than allowing you to sink in.

Firm mattresses are best suited for:

Back sleepers who need strong lumbar support and even weight distribution

Stomach sleepers who require a flat, stable surface to prevent hip sinking and lower back arching

Heavier individuals whose body weight requires a more robust support system

Those who have been advised by a chiropractor or physiotherapist to sleep on a harder surface

People who tend to feel too warm on softer, more enveloping mattresses

The common misconception is that firmer always means better for back pain. This is not universally true. A mattress that is too firm for a side sleeper, for example, will push against the hips and shoulders rather than allowing them to settle, forcing the spine into an unnatural lateral curve.

Medium Mattresses: Who They Suit

Medium firmness is the most versatile option and the most commonly recommended starting point for those who are unsure of their needs. It offers a balance between surface comfort and underlying support, making it suitable for a wide range of body types and sleep positions.

Medium mattresses are best suited for:

Side sleepers who need enough give to accommodate the shoulders and hips

Combination sleepers who move between positions throughout the night

Average weight individuals looking for all round comfort and support

Couples with different sleep positions who need a compromise solution

Those new to orthopaedic mattresses who want to transition gradually from a softer surface

A medium feel orthopaedic mattress is often the ideal choice for people with general lower back discomfort who are not sure whether their pain stems from a firmness or pressure point issue.

Soft Mattresses: Who They Suit

Soft or plush mattresses are less commonly recommended in the orthopaedic category, but they do have a legitimate place for certain sleepers. A soft orthopaedic mattress still maintains a supportive internal structure, with a more generous comfort layer on top to create a deeper, cradling feel.

Soft mattresses may be appropriate for:

Lightweight individuals whose bodies do not compress a firmer mattress enough to benefit from its support

Side sleepers with hip or shoulder joint pain who need deeper pressure relief

Those recovering from certain injuries where minimising pressure at specific points is a clinical priority

It is worth noting that a soft mattress is rarely the best long term choice for back pain sufferers unless recommended for a specific clinical reason. The risk of the spine losing neutral alignment due to excessive sinkage is significant for many body types.

How Body Weight Affects Firmness Choice

Your body weight plays an important role in how a mattress actually performs for you. A mattress that feels medium to one person may feel soft to someone who weighs significantly more, and firm to someone who weighs less. As a general guide, lighter individuals tend to do better with softer to medium surfaces, while heavier individuals often need a firmer mattress to achieve equivalent support.

The Best Way to Choose

The most reliable way to find your ideal firmness is to test mattresses in person with the guidance of a knowledgeable sleep specialist. Spending a few minutes lying in your natural sleep position on each firmness option gives you practical, physical feedback that no online quiz can replicate.

If possible, ask about trial periods and comfort guarantees. A reputable orthopaedic mattress retailer will stand behind their recommendations and offer you options if the initial choice does not meet your needs after a few nights.

At Chiro Care Mattresses in Melbourne, our team specialises in matching customers to the right orthopaedic firmness for their unique body and sleep style. Come and experience the difference in our Thomastown or Ravenhall showrooms, or visit us online at chirocaremattresses.com.au

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