⚡ 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.
Best Mattresses for Back Pain in Australia 2026
Ergoflex builds mattresses specifically with spinal health in mind. The 5G uses five layers of high-density memory foam, each serving a specific purpose in the support chain. The result is a mattress that cradles your body while maintaining strict lumbar alignment — particularly effective for lower back pain. Back sleepers consistently report reduced morning stiffness after 3–4 weeks of use.
Best for: Chronic lower back pain, disc issues, back sleepers
The Sleeping Duck Mach II is exceptional for back pain because it's adjustable. You choose your firmness — and if it's not right for your back, you adjust it without returning the mattress. This is genuinely valuable because what works for back pain varies significantly from person to person. The hybrid construction (foam + pocket springs) also solves the heat retention problem common with all-foam back pain mattresses.
Best for: Back pain with unknown ideal firmness, couples, hot sleepers with back pain
The Koala's medium-firm feel makes it a natural fit for most back pain presentations. It's supportive without being punishingly hard, and the Kloudcell foam provides enough give at the hips and shoulders to prevent compensatory lower back strain. The best choice if back pain is a concern but not your primary issue.
Best for: Moderate back pain, side sleepers with lower back issues, general use
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.