What it is
A pillow fills the gap between your head and the mattress so your neck stays roughly in line with your spine. That gap depends on position: side sleepers have the biggest gap (shoulder width) and need a higher, firmer pillow; back sleepers a medium one; stomach sleepers a very thin one or none.
Fills differ in feel, heat and upkeep. Down and feather are soft and mouldable; memory foam holds its shape but can sleep warm; latex is springy; shredded foam and buckwheat let you adjust the height; polyester fibre is cheap and washable but flattens fastest.
How strong is the evidencelimited
A 2021 meta-analysis found small reductions in neck pain and waking pain with latex pillows in people with chronic neck pain, and that pillow height and shape affected neck alignment more than material. A 2025 review of newer trials found no pillow type clearly better. Trials are small and varied, and none show a pillow improves sleep or health in people without neck pain.
The claims you’ll meet5 checked
The right height depends on how you sleepHolds upAlignment studies show height and shape change neck position; side sleepers need the most height.
Latex pillows reduce neck painMixedPooled small trials favour latex over standard pillows in chronic neck pain, but the effect is small and a later review found no clear winner.
Contoured 'cervical' pillows fix neck painMixedSmall trials disagree. Some people with neck pain do better on one, others don't; buy with a return policy.
Cooling gel pillows keep you cool all nightUnprovenThe cool touch fades as the pillow warms. Breathable fills matter more.
'Hypoallergenic' pillows prevent allergy symptomsUnprovenThe term isn't regulated, and dust mites colonise any fill. Washability matters more.
What to look for5
- ✓Height (loft) for your position: higher for side sleeping, medium for back, thin for stomach. Adjustable fills let you tune it.
- ✓Enough support that you don't need to fold it in half or stack two.
- ✓A washable pillow, or at least a removable, washable cover.
- ✓Breathable fills (down, latex, buckwheat, shredded foam) if you sleep warm.
- ✓A return policy, since comfort is individual.
What to skip3
- ×'Orthopedic' and 'chiropractor-designed' labels. No standard sits behind them.
- ×Copper-infused or 'recovery' fabrics.
- ×Treating an online 'sleep quiz' as a fitting. It's a sales tool; the return policy is what protects you.
How to use it2
- →Wash pillows (if the label allows) or their covers regularly. A hot wash around 60°C (140°F) kills dust mites; cooler washes remove allergen but leave most mites alive.
- →Replace a pillow when it stays flat or lumpy after fluffing.
Take care2
- !No pillows in a baby's sleep space in the first year.
- !Neck pain with arm numbness or weakness, severe headache, fever, or pain after an injury needs a clinician, not a new pillow.
The studies2 cited · checked against PubMed
The effects of pillow designs on neck pain, waking symptoms, neck disability, sleep quality and spinal alignment in adults: A systematic review and meta-analysis ↗Chun-Yiu JP, Man-Ha ST, Chak-Lun AF · Clinical Biomechanics · 2021Systematic review and meta-analysis
35 studies, 9 of high quality (555 people). Latex (rubber) pillows modestly reduced neck pain and waking pain in chronic neck pain; pillow height and shape affected neck alignment more than material.
Effect of pillow on pain, disability and sleep quality in patients with chronic neck pain: A systematic review ↗Ghosh S, Goyal M, Goyal K · Rehabilitación · 2025Systematic review
Five trials (239 people with chronic neck pain) from 2015-2024. Pain improvements were minor, disability results inconsistent and sleep quality differences not significant; no pillow type (latex, foam or standard) was clearly better.