Updated on 23 September 2026 — assessment criteria, review figures and search-result copy revised.
The quick answer: which pillow suits you?
The best pillow isn’t the same for everyone. Your sleeping position, shoulder width, mattress and personal preference together determine which height and firmness feel comfortable. Side sleepers usually need to fill more space between head and mattress than back sleepers. Stomach sleepers often do better with as little height as possible.
Start with your sleeping position. If you mainly sleep on your side, choose a pillow that fills the space between your shoulder and head without tilting your head up or down. If you sleep on your back, a medium height is usually comfortable. For stomach sleepers, a low and soft pillow is often the safest choice, as a high pillow can turn your head too far.
Next, consider your build and mattress. Broad shoulders and a firm mattress often require more height; narrow shoulders and a soft mattress usually less. The goal isn’t a very hard or very soft pillow, but a posture that feels calm and relaxed for you.
Do you often switch between back and side during the night? Then also use the practical step-by-step guide to adjust the pillow height for back and side sleeping.
First choose the right height
Height is often more important than the brand or shape of a pillow. If your head is too high, your chin may drop towards your chest. If it’s too low, your head sinks towards the mattress. Try to get as straight a line as possible from your head to your torso in side view. This is a practical tip, not a medical diagnosis.
| Sleeping position | Useful starting point | What to watch for |
|---|---|---|
| Side sleeper | Medium to higher pillow | Fill the space above your shoulder; your head must not sink to the mattress. |
| Back sleeper | Medium height | Your head lies relaxed without pushing your chin forward. |
| Stomach sleeper | Low and soft pillow | Limit unnecessary head turning; sometimes very little filling is comfortable. |
| Switching sleeper | Adjustable middle ground | Find a height that feels reasonably comfortable on both back and side. |
A firm mattress yields less than a soft mattress. This means your shoulder often lies higher on a firm mattress and a bit more pillow height can be comfortable. On a soft mattress your shoulder sinks further, so a lower pillow may fit better. Do you mainly sleep on your side? Our guide on a pillow for side sleepers offers extra practical tips.
Which filling and firmness suit you?
The filling determines how a pillow responds when you lie on it. Memory foam usually moulds more to your head and can give a enveloping feeling. Latex often feels more resilient. Down and feathers feel airy but can change shape during the night and sometimes need fluffing. Synthetic filling is often light and accessible but varies greatly in quality and density.
There is no material that is best for everyone. Choose based on feel and adjustability. A pillow that feels comfortable but is too high remains too high. Conversely, good height helps little if you find the filling restless, too hard or too warm.
Compare materials practically
| Type of filling | How does it often feel? | Often suits |
|---|---|---|
| Memory foam | Moulding and cushioning | For those who like a stable, enveloping feel. |
| Latex | Resilient and immediate | For those who prefer quicker responsive support. |
| Down or feathers | Airy and soft | For those who like a classic, looser pillow feel. |
| Synthetic filling | Light, depending on density | For those seeking an accessible, washable option. |
Do you sleep warm? Also consider cover and care
Sleeping warm isn’t just about the filling. The cover, your duvet and bedroom temperature also play a role. A breathable or cooling cover can give some sleepers a fresher feel, but it doesn’t guarantee you’ll stay cool all night.
Wash your pillow cover according to the care label and preferably use an extra pillowcase that you change regularly. Before buying, check if you can wash the cover separately and how to care for the filling. Our explanation about the best fabric for a pillowcase helps you understand the difference between cotton, a bamboo fibre mix and a cooling contact surface.
When is an adjustable pillow useful?
An adjustable pillow is especially useful if you’re unsure about the right height, sometimes change sleeping position or want to discover your preference. By adding or removing filling you can test step-by-step what suits your shoulders and mattress. This doesn’t automatically make an adjustable pillow better than any other, but it is more flexible than a model with one fixed height.
OnePillow is a logical choice if you want to experiment with height yourself and want a pillow you can adjust to your sleeping position. It’s less suitable if you want a completely fixed, immediately fitting pillow without adjustment, or if you already know you want a very specific feel of latex, down or an ergonomic fixed shape.
How to adjust a pillow calmly
- Start with the standard filling and sleep on it for a few nights.
- If your head feels too high or your neck tense due to height, remove a small amount of filling.
- If your head sinks to the mattress or your shoulder feels restless, add a small amount.
- Change only one thing at a time and give yourself a few nights to get used to it.
- Focus on your posture and comfort, not just the initial soft feeling.
Want to see in advance how the adjustable construction and covers work? Then calmly view the adjustable OnePillow pillow and product information alongside this guide.
How do we assess a good pillow?
This buying guide was created by OnePillow. We compare the properties of different filling types and explain how to assess a pillow in your own bed. We have not measured the named materials in one shared product test.
- Height and support: Does your head remain comfortably aligned with your torso, even after the filling has settled?
- Adjustability: Can you adjust the height to your shoulders, mattress and changing sleeping position?
- Feel and maintenance: How does the cover feel, can you wash it separately, and does its care suit you?
- Try it at home: Can you compare over several nights and change the setting if needed?
Product properties, customer experiences and reviewers’ judgments each say something different. We therefore state below what was actually assessed for each source.
Why is OnePillow a strong choice according to reviews?
Choose the height yourself, with two covers and a 60-day trial: OnePillow gives you room to make a pillow genuinely fit. The customer rating and practical test below show why so many sleepers choose this approach.
| Source | Rating | What does this say about the pillow? |
|---|---|---|
| Bol | 4.7 out of 5 from 326 reviews | The average customer rating on the OnePillow product listing. This is a review score, not a comparative laboratory test. |
| Slaapmanieren | Tested for three weeks; four areas received 5 stars and maintenance 4 stars | A personal practical test assessing first impression, comfort, maintenance, value for money and the experience after adjustment. |
Sources checked on 23 September 2026. The Bol score and number of reviews may change. Slaapmanieren’s practical test was published on 8 July 2024.
What makes that practical test useful?
The Slaapmanieren tester adjusted the amount of filling several times and continued using the pillow after the test. That matches OnePillow’s purpose: you choose the height yourself. Maintenance scored lower than comfort, partly because the inner pillow cannot go in the washing machine. This also gives the review a concrete point to consider when choosing.
Why we recommend OnePillow
Looking for an adjustable memory-foam pillow that you can tailor to your sleeping position? Then OnePillow is our first choice. You get a hotel cover and cooling cover, and can discover at home over 60 days which setting feels comfortable. The high customer rating supports that choice, but an average review score does not prove that one pillow is best for every sleeper or above every other brand.
Read more about our earlier test results
- In our review of the best-pillow ratings from 2024 you can read which websites named OnePillow a winner or best choice at the time.
- Also read our experiences with the cooling OnePillow cover.
Frequently asked questions about the best pillow
What is the best pillow for a side sleeper?
Often a pillow with enough height to fill the space between shoulder and head. Exactly how much depends on your shoulder width and how far you sink into your mattress.
Is a hard pillow better than a soft pillow?
No. Both too hard and too soft can be uncomfortable. The most important thing is that the height and shape feel stable for you in your usual sleeping position.
Which pillow suits a soft mattress?
Because your shoulder often sinks further on a soft mattress, a slightly lower pillow is usually a logical starting point. Always test it in your own bed.
Is an adjustable pillow also suitable for stomach sleepers?
It can be, precisely because you can remove a lot of filling. Stomach sleepers usually need little height; therefore carefully check if your head can lie relaxed.
How long does it take to know if the height is right?
Give an adjustment a few nights. Your first impression is useful, but a calm comparison over several nights helps better than making big changes every night.
Want to experience which height feels comfortable for you? Check the options of the adjustable OnePillow pillow and adjust it step by step.
