⚡ Quick Answer
For most back pain sufferers, a medium-firm mattress with targeted lumbar support is the best choice. Our top pick is the Ergoflex 5G for specialist support, or the Sleeping Duck Mach II if you also need adjustable firmness.
What Causes Mattress-Related Back Pain?
Not all back pain is mattress-related — but if you're waking up stiff and the pain improves as you move around during the day, your mattress is almost certainly a contributing factor. Here's what goes wrong:
- Too soft: Your hips sink deeper than your shoulders, creating a downward curve in the spine. Your lower back muscles work overtime trying to compensate — all night, every night.
- Too firm: The mattress can't cushion pressure points at the hips and shoulders, creating tension that radiates into the lower back.
- Worn out: An old mattress that's developed body impressions provides uneven support that your body has to constantly compensate for. If your mattress is over 8 years old, this is almost certainly a factor.
The sweet spot for back pain is almost always medium-firm — supportive enough to hold your spine neutral, with enough cushioning to relieve pressure at the hips and shoulders.
Best Mattresses for Back Pain in Australia 2026
What Firmness Is Best for Back Pain?
| Sleep Position | Recommended Firmness | Why |
|---|---|---|
| Side sleeper | Medium to Medium-Soft | Cushions hips and shoulders while maintaining lateral spinal alignment |
| Back sleeper | Medium-Firm to Firm | Supports the lumbar curve without excessive sinkage |
| Stomach sleeper | Firm | Prevents hips dropping and straining the lower back |
Other Factors That Help Back Pain
- Pillow height: A pillow that's too high or low throws your neck out of alignment, creating knock-on lower back effects.
- Sleep position: Side sleeping with a pillow between your knees is widely recommended. Back sleeping with a pillow under your knees also helps.
- Bed base: Slats more than 7cm apart undermine even the best mattress. Check yours.
- Mattress age: Over 8–10 years old? The support has likely degraded significantly regardless of how it feels.
Continue reading: Best Mattress Australia 2026 — Full Guide · Best Budget Mattress Australia · Full Mattress Comparison