If you wake with a stiff lower back or tight shoulders that ease once you are up and moving, your pillow is a more likely cause than most people think. It sets the angle for the top of your spine, and if your head is held too high, too low or twisted to one side for seven hours, the rest of your back spends the night compensating.
Quick answer: The best pillow for back pain is one that keeps your head level with your spine in the position you actually sleep in, and still holds that height at 3am. For back sleepers that means a lower to medium pillow that supports the curve of the neck; for side sleepers, a higher pillow (around 10 to 12cm under load) that fills the gap between ear and shoulder. Memory foam and pocket sprung pillows hold their height; feather, down and hollowfibre do not. If the pain is in your lower back, a second pillow under your knees (on your back) or between your knees (on your side) usually does more than any change to the head pillow.
A pillow cannot fix a mattress that has stopped supporting you. If your back pain has arrived with sagging or a visible dip, start with our best mattress for back pain guide. If it is firm, orthopaedic-level support your back responds to, the REM-Fit 4000 Ortho Elite Hybrid Mattress is built around exactly that job. Everything below assumes the mattress is sound and the pillow is the variable.
How we put this guide together
We make pillows, so treat our product picks as exactly that. The rules on loft, position and filling come first and apply to any pillow you own or are considering. They are drawn from NHS guidance on back pain, a peer-reviewed review of pillow ergonomics, and the pattern we see in returns and reviews across our own range.
How a pillow affects your back, not just your neck
Think of your spine as one continuous line from the base of your skull to your pelvis. Neutral alignment means no sharp bend anywhere along it. A pillow that lifts your head too far forces flexion through the neck, and the upper back tenses to stabilise it. A pillow that is too low lets the head drop back or sideways, and the muscles between the shoulder blades brace against the tilt all night. Either way, the lower back often ends up subtly twisted as the body tries to compensate.
The tell-tale pattern is pain that is worst on waking and improves within an hour of getting up. Pain that persists all day, or that started after an injury, is something to raise with your GP rather than a pillow problem.
Three pillow faults cause most of it:
Wrong height for your sleeping position. The gap between your head and the mattress is small on your back and large on your side. One pillow rarely suits both.
A filling that collapses overnight. A pillow that feels right at 11pm and is flat by 3am gives your spine two different alignments in one night. Feather, down and cheaper hollowfibre are the usual culprits.
Stacking two pillows. Almost always lifts the head too high. One pillow at the right height beats two at the wrong one.
Pillow height and firmness by sleeping position
Loft means height under load: what the pillow measures with your head on it, not fluffed up on the bed. The ergonomics review above found around 7cm worked best for back sleeping and around 10cm for side sleeping, with the caveat that body shape and mattress firmness shift those numbers.
| How you sleep | Loft to aim for | Feel | Common mistake |
|---|---|---|---|
| Back sleeper | Lower to medium, around 7 to 9cm under load | Medium support that cradles the neck curve | Overstuffed pillow pushing the chin towards the chest |
| Side sleeper | Higher, around 10 to 12cm under load | Medium-firm to firm so it holds the shoulder gap | Soft pillow that starts at the right height and flattens |
| Front sleeper | Low and soft, or none | As thin as you can tolerate | Any height at all adds a second bend to a neck already turned sideways |
| Combination sleeper | Medium, matched to the position you spend longest in | Responsive, easy to reposition | Buying for the position you fall asleep in, not the one you wake up in |
The 60-second check. Lie in your normal position and ask someone to photograph you from the side (or from above if you are on your back). Your nose should sit roughly in line with the centre of your chest, and the line from ear to shoulder should be level. Head tilting down: you need more loft. Chin pushing towards chest: you need less.
Side sleepers should read our side sleeper pillow guide, which goes deeper on the 10 to 12cm rule. If the pain sits mainly in your neck rather than your back, the neck pain guide covers that end of the same spine.
The second pillow: knees, not head
If your pain is in the lower back, the head pillow is only half the fix. Lying on your back, a pillow under the knees takes the lumbar spine out of extension and lets the lower back settle flat. Lying on your side, a pillow between the knees stops the top leg pulling the pelvis forward and twisting the lower spine. This is the single change most people with lower back pain notice first, and it costs nothing if you already own a spare pillow. Our guide to the best sleeping position for lower back pain covers it in more detail.
Which filling holds its height
Once the loft is right, the question is whether the pillow keeps it until morning.
| Filling | Holds its height? | Verdict for back pain |
|---|---|---|
| Solid memory foam | Yes, returns to the same shape every night | Best for close contouring and consistent alignment. Choose gel-infused or a cooling cover if you run hot |
| Crumbed memory foam | Yes, with a softer, more mouldable feel | Good middle ground for combination sleepers who want support without a solid block |
| Pocket sprung | Yes, springs rebound rather than compress | Best for sleepers who want height and support with more bounce and airflow than foam |
| Latex | Yes | Supportive and buoyant; suits people who dislike the sink of memory foam. We do not make one |
| Feather and down | No, compresses under the head and needs re-plumping | Avoid if stable alignment is the goal |
| Hollowfibre | No, flattens within a year or two | Cheap and washable but short-lived; replace often if you use one |
Our memory foam pillow guide covers the material in full, and the feather and down vs memory foam comparison explains why first-touch softness and overnight support rarely line up.
Our picks for back pain, by sleeping position
Back sleepers, or anyone who runs hot: the REM-Fit 500 Cool Gel Pillow. A solid memory foam core shaped for neutral alignment, with cool gel infused through the foam so it does not trap heat. Good Housekeeping's Best Memory Foam Pillow 2026.
REM-Fit 500 Cool Gel Pillow
£69.99
Good Housekeeping Winner 2026. Gel-infused memory foam that holds its loft all night and keeps the neck level with the spine. Removable washable cover.
Shop the 500 Cool Gel PillowSide sleepers who need height, or back sleepers who need less of it: the REM-Fit Bamboo Charcoal Pillow, because it is the one pillow in our range you can buy in two depths. The 12cm version fills the shoulder gap for side sleepers; the 8cm version suits back sleepers and smaller frames. Bamboo charcoal memory foam, naturally hypoallergenic.
REM-Fit Bamboo Charcoal Pillow
£59.99 (8cm) / £64.99 (12cm)
Choose your loft: 8cm for back and front sleepers, 12cm for side sleepers. Holds its height, dust mite resistant, 5-year guarantee.
Shop the Bamboo Charcoal PillowSide and combination sleepers who want support with bounce: the REM-Fit Deluxe Pocket Sprung Pillow. Individual pocket springs give a higher, more responsive loft than foam, with better airflow, and they rebound every time you turn rather than slowly re-forming.
REM-Fit Deluxe Pocket Sprung Pillow
£69.99
Pocket springs for consistent height and airflow, with a soft outer layer. Suits side and combination sleepers. 5-year guarantee.
Shop the Deluxe Pocket Sprung PillowOn a budget, or as the second pillow for your knees: the REM-Fit 400 Memory Foam Crumbed Pillow (£49.99) is crumbed memory foam you can mould, which also makes it a good knee pillow. Hot sleepers who want a solid foam core with a cold-touch surface should look at the Snow Pillow (£59.99).
✓ Free UK delivery ✓ 0% finance
How to tell if a new pillow is working
Give it a week, not a night. If your old pillow held you in a poor position for years, the first two or three nights on a correct one can feel odd. Then look for a pattern:
Good signs: less stiffness on waking, no need to fold or bunch the pillow, no arm shoved underneath it.
Warning signs: new neck tightness, ear pressure on one side, morning headaches, or a sense your shoulders are working in bed. These usually mean the loft is wrong for your position, not that the pillow is bad.
Replace any pillow every two to three years, sooner if it folds and stays folded. A washable protector keeps sweat and oils out of the filling and extends that; our guide on how to wash pillows covers which fillings can go in the machine.
When to see a GP
Most pillow-related back pain improves within days of fixing the height. See your GP if the pain is severe, lasts more than a few weeks, keeps returning, followed an injury, or comes with numbness, tingling or weakness in your legs, or any change in bladder or bowel control. Those are signs of something a pillow will not fix.
Frequently asked questions
What type of pillow is best for back pain?
One at the right height for your sleeping position in a filling that holds that height all night. For back sleepers that is a lower to medium memory foam pillow that supports the neck curve; for side sleepers a higher memory foam or pocket sprung pillow around 10 to 12cm under load. Feather, down and hollowfibre collapse overnight and are the weakest choice for alignment.
Is a firm or soft pillow better for back pain?
Firm enough to hold your head at a consistent height, which usually means medium-firm. Very soft pillows let the head sink through to the mattress; very hard ones create pressure at the ear and jaw without improving alignment.
Should I sleep with a pillow under my knees for back pain?
If you sleep on your back and have lower back pain, yes. A pillow under the knees takes the lumbar spine out of extension. If you sleep on your side, put it between your knees instead to stop the pelvis twisting.
Can a pillow cause lower back pain?
Indirectly. A pillow that holds the neck out of line makes the rest of the spine compensate, and the lower back often takes the strain. The pattern to look for is pain that is worst on waking and eases within an hour of getting up.
How high should my pillow be?
Measured with your head on it, roughly 7 to 9cm for back sleepers and 10 to 12cm for side sleepers, adjusted for body size and how firm your mattress is. The photo test above is the quickest way to check.
How often should I replace my pillow?
Every two to three years for most fillings, sooner if it has flattened or folds and stays folded. Memory foam and pocket sprung pillows hold their structure longer than feather or hollowfibre.
