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Mattress Firmness Explained: What Level Is Right For You?

Choosing the right mattress firmness can make all the difference to your sleep quality. But with different options, how do you know which firmness is best? This is where we come in. As bed and mattress experts, we're going to share our knowledge on mattress firmness levels, what they mean, and how to choose the right one for you.

What is mattress firmness?

Firmness vs support

Why does firmness matter?

  • Proper spinal alignment, which prevents aches
  • A comfortable sleeping surface
  • Pressure relief for joints
  • Better quality rest, reducing tossing and turning

What are the different levels of mattress firmness?

1. Soft mattresses

2. Medium mattresses

3. Firm mattresses

4. Very firm mattresses

5. Split tension mattresses

Firmness Level Rating Description Best For
Soft 1-3 Plush with that sink-in feeling Side and light sleepers
Medium 4-6 Balanced comfort and support Most sleeprs and couples
Firm 7-8 Solid with less give Back and stomach sleepers or heavier individuals
Very Firm 9-10 Very hard Those needing strong spinal support
Split tension Varies Different firmness levels on each side Those who share a bed and have different comfort levels

What is the best firmness for a mattress?

How to choose the right mattress firmness

Sleeping position

  • Side sleepers are best suited to soft to medium mattresses for pressure relief around the shoulders and hips.
  • Back sleepers do well with a medium mattress that supports spinal alignment.
  • Stomach sleepers usually need a firm mattress to prevent the hips from sinking too low.

Weight

  • Lightweight individuals under 9st are better suited for soft mattresses as this provides better contouring and comfort.
  • Average people weighing 9-16st need balanced support from a medium mattress
  • Heavier sleepers weighing over 16st would benefit from firm or very firm mattresses, as these offer more substantial support and can help prevent sagging.

Age

  • Toddlers need a firm toddler mattress to support safe development.
  • Children aged 4-12 are still developing spinal alignment, posture, and bone structure, so a medium kids' mattress is ideal as it balances support with comfort.
  • Teenagers aged 13-19 undergo rapid growth and may develop new sleep preferences; therefore, a medium mattress can help with this.
  • Adults' firmness levels vary by body type and sleep position, but medium remains a popular decision.
  • Older adults age 60 and older are more prone to joint pain and pressure sensitivity, so a soft or medium mattress would suit you as you'll need gentle cushioning and ease of movement.

Concerns

  • A medium firm mattress and a firm mattress are some of the best mattresses for back pain, as they help with spinal alignment.
  • For joint pain, a softer mattress can help reduce the pressure on the hips and shoulders.
  • For hot sleepers, a firmer mattress can retain less heat as they don't give that sink-in feeling around your body.

Comfort preference

Finding the right mattress for you at Dreams