Mattress Firmness & Sleeping Position: Find Your Ideal Feel (Expanded)

In this guide from The Sleep Shop, we keep it simple and practical so you can shop with confidence.

In This Guide:

Soft (1–3) – plush
Medium (4–6) – balanced
Firm (7–9) – supportive

Note: Brands rate differently, so always test or check ILD ratings.

Side sleepers need gentle cushioning — try medium mattresses from Sleepeezee or Relyon.

Back sleepers require lumbar alignment — medium-firm Sealy or Rest Assured pocket systems excel here.

Firmer support avoids hip sink. Silentnight’s orthopaedic ranges suit this posture.

Hybrids or dual-tension models allow each side its own feel.

Does weight affect firmness choice?
Yes — heavier individuals may prefer firmer mattresses for stability.

What if partners differ?
Consider split-tension designs or a topper on one side.