Quick answer: There’s no single “best” mattress
firmness for back pain — it depends on your body weight, sleep position
and where your pain sits. As a general starting point, a
medium-to-firm memory foam or natural latex mattress
gives most people the right balance of spinal support and pressure
relief. Very soft mattresses let the hips and shoulders sink too far and
misalign the spine; very hard mattresses can create pressure points at
the shoulders and hips without contouring to your body’s shape. The
truth is, “firm mattresses are best for bad backs” is one of the most
common myths in mattress shopping.
Around 80% of Australians experience low back pain at some point in
their lives (healthdirect),
and for a lot of people, the mattress they’ve been sleeping on for years
is quietly making it worse. This guide covers how mattress firmness,
contouring and support actually relate to back pain, and how to choose
confidently instead of guessing.
The Biggest Myth:
“Firmer Is Always Better”
It’s a common misconception that a very firm mattress is
automatically better for a bad back. In reality, an overly firm mattress
can fail to contour to the natural curves of your spine, creating
pressure points at your shoulders and hips — particularly for side
sleepers — which can leave you tossing and turning to find relief.
What your back actually needs is support with
contouring: a surface firm enough to keep your spine in a
neutral, aligned position, but responsive enough to cushion your heavier
pressure points (hips, shoulders) rather than fighting against them.
What to
Actually Look For in a Mattress for Back Pain
1. Contouring
A supportive mattress should adjust to the shape of your body as you
sleep — compressing slightly under heavier areas like the hips and
shoulders while still holding up the lighter areas like the waist. This
is where memory foam and natural latex both outperform basic innerspring
mattresses, which tend to support only at the coil points.
2. Spinal support
Your mattress needs to support your lumbar region without pushing
your hips or shoulders out of alignment — this matters most if you’re a
side sleeper, where an unsupportive mattress can let the spine curve
unnaturally through the night.
3. Motion isolation
If you share a bed, a mattress with good motion isolation stops your
partner’s movement from shifting your body out of a supported position.
Latex and memory foam both absorb movement far better than older-style
innerspring mattresses.
4.
Firmness that matches your body weight and position
| Sleep position | Generally suits |
|---|---|
| Side sleeper | Medium to medium-firm — enough give to cushion shoulders and hips |
| Back sleeper | Medium-firm to firm — support under the lumbar curve without a hammock effect |
| Stomach sleeper | Firmer overall — prevents the hips sinking and arching the lower back |
| Heavier body weight | Firmer or higher-density foam — softer mattresses can bottom out and lose support |
| Lighter body weight | Softer to medium — firm mattresses may feel unyielding without enough contouring |
Memory Foam vs
Natural Latex for Back Pain
Both materials outperform basic spring mattresses for back and
sciatic pain, but they feel different:
- Memory foam contours closely and slowly to your
body, providing orthopaedic-style support that spreads pressure evenly —
a good option if you want a closer, softer cradle. - Natural latex has a “push-back” feel — it
compresses under weight but responds immediately, offering cushioned
support while promoting correct spinal alignment. It also tends to run
cooler and last longer than standard foam.
At The Back and Neck Bed Shop, we stock both, across
a full range of firmness levels — soft, medium, firm and extra firm —
from brands including Getha, MLILY, SleepWhisperer and SpineAlign, so
you’re not stuck choosing between “the firm one” and “the soft one.”
What About Sciatica
Specifically?
Sciatica occurs when the sciatic nerve is compressed — often by a
herniated disc, bone spur, or narrowing of the spine — causing pain that
radiates from the lower back through the hips, buttocks and down the
leg, sometimes with numbness. For sciatica, the same principles apply
(contouring + support + motion isolation), but getting the firmness
right matters even more, since too little support can let the hips sink
and increase nerve compression, while too much firmness can create
pressure at the point of pain. This is genuinely one of those cases
where speaking to a mattress specialist — or your physio — about your
specific symptoms is worth it before you buy.
If your pain includes numbness, tingling, or any change in bowel or
bladder function, see a doctor promptly rather than mattress shopping
first (healthdirect).
Try Before You Commit
Firmness preference is genuinely personal — what feels supportive to
one person feels rock-hard to another. That’s why we recommend testing
mattresses in person at our Booragoon showroom, where our mattress
specialists can talk through your specific pain, sleep position and body
type.
Every mattress we sell also comes with a 60 Night Comfort
Guarantee — sleep on it for up to 60 nights, and if it’s not
right for your back, you can return it for a different one (terms and
conditions apply). That takes most of the risk out of buying online if
you can’t make it into the showroom.
Frequently Asked Questions
Is a firm mattress
always best for back pain?
No — this is one of the most common mattress myths. A mattress that’s
too firm can fail to contour to your body, creating pressure points at
the shoulders and hips, especially for side sleepers. Most people with
back pain do best on a medium-to-firm mattress that combines support
with enough contouring to cushion pressure points.
What’s the best
mattress type for sciatica?
Memory foam and natural latex mattresses are generally best for
sciatica, since they contour to relieve pressure on the compressed nerve
while still supporting spinal alignment. Firmness should be tailored to
your body weight and sleep position — a mattress specialist or
physiotherapist can help you narrow this down based on where your
symptoms sit.
How do I
know if my mattress is causing my back pain?
Common signs include waking up with stiffness that improves once
you’ve been up and moving for 20–30 minutes, visible sagging or body
impressions in the mattress, or pain that’s worse on one side if you
consistently sleep on that side. If your mattress is more than 7–10
years old and you’re waking up sore, it’s worth having it assessed.
How long does
a good mattress for back pain last?
A quality memory foam or latex mattress typically lasts 8–10 years
with proper care, though this varies by density and usage. If you’re
noticing sagging, reduced support, or your back pain has returned after
years of good sleep, it’s a sign your mattress has reached the end of
its supportive life.
Can I try a
mattress before buying it in Perth?
Yes — we strongly recommend it. Visit our Booragoon showroom to test
the actual firmness and feel of each mattress with one of our
specialists, who can recommend options based on your sleep position and
pain. Every mattress also comes with a 60 Night Comfort Guarantee if
you’d rather test it at home first.
Browse our full range of mattresses
for sciatica and back pain, or call our specialists on 1300
349 771. You might also want to read: do mattress
toppers really help back pain? and adjustable bed vs
mattress topper vs new mattress.