I've found the 6 best pillows for side sleepers – but I had to sleep on over 50 options to find them

The best pillow for a side sleeper is a medium-firm or firm option with a high loft that's somewhere between 8 - 12cm. Ideally, it should be deep enough to fill the gap between your ear and the mattress, so that when you lie on your side to sleep, your posture is the same as if you were standing up straight.

Studies by the National Library of Medicine show that over 50% of the population are side sleepers, so luckily there are plenty of pillows on the market aimed specifically at side sleepers. However, finding the best pillow for side sleeping can still be tricky, as we each have different shoulder widths and different mattress tensions that affect our ideal pillow height.

The good news is that as Ideal Home's Sleep Editor, I've spent the past five years testing over fifty pillows (and counting) to track down the very best side sleeping options.

Overall, the Woolroom Natural Latex Washable Wool Pillow is my top choice for side sleepers thanks to its two height options and latex filling that offers support for the neck and pressure relief for the head. But depending on your sleep preferences, there are plenty more options on my shortlist to help you find the perfect fit if you sleep on your side.

The quick list

Short on time? This quick list is an overview of the very best side sleeping pillows. You'll find more information on each pillow and why I recommend it if you continue scrolling.

The best side sleeping pillows

Best side sleeping pillow overall

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Overall, I think the Woolroom Natural Latex Washable Wool Pillow is one of the best pillows for side sleepers available. And that's really saying something, because I've tested a *lot* of pillows especially designed for this sleeping position.

This pillow comes in two height options, a 15cm and an 18cm depth. This choice is particularly important for side sleeping because the width of our shoulders and the softness of our mattress both affect the height of the pillow we need to keep our head, neck, and spine aligned.

However, my favourite feature is its natural latex core. Latex is still a fairly uncommon pillow filling, but I'm a *big* fan. This material offers great support that lifted my head nicely in line with my spine when I was lying on my side, but unlike foam or memory foam, it doesn't feel overly firm. Instead, I found it a bit like resting my head on top of a very firm jelly! Sounds odd, but you'll have to trust me; it feels great! Woolroom describes it as a 'weightless' sensation, and I'd agree.

Even better, latex is more breathable than foam, and Woolroom has added extra air holes plus a cotton and wool cover, which is brilliant at regulating temperature. I'm a hot sleeper, and I've overheated on pretty much every memory foam or foam pillow I've tested for side sleeping, but I stayed comfortably cool all night long on this pillow.

This pillow is an investment, but having tested a *lot* of other options, I do think it's worth it. It is worth noting that you can't clean the latex core, and the cover needs washing on a delicate wool cycle, but that's because it's made from all-natural materials that are far gentler on the environment than synthetics, so, for me, that's another vote in its favour. A 30-night sleep trial also means there's an opportunity to test out if it's *your* dream pillow before you commit.

My full Woolroom Natural Latex Washable Wool Pillow review has all the details

Best pillow for side sleepers with neck pain

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Finding a pillow that's the right height is *the* most important factor if we're a side sleeper. That's because a pillow that's too high, or too low, can put strain on the neck and either cause neck pain or make existing neck problems more painful.

Unlike pretty much any other pillow I've come across, the Levitex Sleep Posture Pillow is available in four heights, and this makes finding the exact right height pillow for you far easier. I simply input my height and mattress tension into Levitex's clever pillow height calculator, and it advised which of the 8, 10, 12, and 14cm depth pillows would suit me best.

Once the pillow arrived, it was indeed exactly the right depth to fit snugly against my shoulder and support my head. Because this pillow is made of firmer foam than any other pillow in this round-up, I also found it very stable. This stability kept my head in its optimum posture all night long, rather than the filling gradually shifting or dropping and putting strain on my neck. This firmer feel also prevented me from slumping forward or back as my body relaxed – another plus point for those with neck pain.

On the downside, I found it slept a little warm, and that firm foam meant I found this pillow a little utilitarian in feel. Unlike other options in this shortlist, it doesn't have much squish factor, so it doesn't feel particularly luxurious, but then it's designed for a function: to keep the head firmly supported to avoid any neck pain, and it does very well.

It's also a reasonable price. Plus, a generous sleep trial means there's plenty of opportunity to test out if it's for you before you commit.

My Levitex Sleep Posture Pillow review has the full lowdown.

Best budget pillow for side sleepers

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If you're a side sleeper looking for an affordable pillow, this is the best value option I've found. And for once, more affordable doesn't mean a compromise on comfort, because this is a great pillow.

Its memory foam inner isn't as firm as most of the other options in this round-up, so I did find my head gradually sinking deeper into it during the night, but its blocky design still tucked nicely in between my shoulder and neck and kept my head at a good height. I also quite appreciated that extra bit of squish, as I'm personally not a fan of an overly firm pillow.

The main downside of this pillow is that it only comes in one height option. That means it's likely to be too low for taller side sleepers or those on a firmer mattress, and too high for shorter side sleepers or those on a soft mattress.

Luckily, there's a sleep trial. So in my opinion, this pillow is well worth testing out to see if it's the right dimensions for you. If it is, you're in luck and can bag a bargain; if not, and you can afford to invest a little more, the other adjustable options in my round-up could be a better fit.

Find out more in our Panda Memory Foam Pillow review.

Best memory foam pillow for side sleepers

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TEMPUR was the first brand to take a material developed by NASA for use in spacecraft – otherwise known as memory foam – and turn it into a material that's taken the sleep world by storm. So perhaps it's little wonder that I've found this is the best memory foam pillow for side sleepers.

The brand's memory foam feels denser and heavier than competitors, and seems to do a better job of moulding to the head and neck than most alternative options I've tested. But what really makes this pillow stand out for side sleepers is its ergonomic, ridged design that's specifically crafted to support the neck when you're lying on your side.

Importantly, it also comes in three height options that make finding the right fit for your shoulder width and mattress tension easier. TEMPUR has also solved one of memory foam's biggest downsides – its tendency to cause overheating – thanks to a clever cooling cover that kept even my head – and I'm a *very* hot sleeper – cool overnight.

That means its main downside is its price. At £149, this pillow is quite the investment, and significantly more expensive than anything else in my round-up. Its softer, malleable memory foam core also means it lacks some stability, so those with neck pain might struggle, as I found my head did slowly sink lower for the first twenty minutes or so..

However, if you love the cushioning of memory foam, and one of those three height options is the perfect fit to tuck under your head, this could be your ideal side sleeping pillow. And if you buy direct from TEMPUR, a 30-night sleep trial makes the investment a lot less risky.

Best firm pillow for side sleepers

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If you love a firm pillow, then the Groove Memory Foam Pillow is one of the most solid I've tested. The only pillow that's firmer is the Levitex Sleep Posture Pillow further up this shortlist; however, they both offer slightly different support.

Whereas the foam Levitex pillow doesn't budge an inch under your head, this Groove memory foam option has a teeny bit of give, but not as much as any other memory foam pillow I've tested. I found it felt very dense and solid under my head, and my head stayed raised in alignment with my spine throughout the night.

Plus, as you may have gathered from its name, this Groove pillow is also adjustable. It's a new and upgraded version of Groove's popular Original Groove Pillow, but this tweaked version has the original memory foam core, plus three extra foam layers that can be kept inside the zippered cover or removed to adjust its height.

It took me a few nights to find my preferred combination of inner layers, but once I had, I found its ergonomic shape supported my head and neck well, and I liked the fact that it's curved, so there was space for my shoulder, unlike with the Levitex option.

Considering it's an adjustable pillow, I think it's also very reasonably priced at just £45, and there's a generous 100-night sleep trial.

The downsides? I found my head got hot after about 20 minutes lying down, but that was also the case with the foam-filled Levitex pillow. As a hot sleeper, I preferred Woolroom's cooler latex pillow, but if you want truly firm, you may need to accept a little extra warmth to achieve that.

Find out more in my Groove Adjustable Memory Foam Pillow review.

Best soft pillow for side sleepers

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There's a good reason most pillows for side sleepers are firm or medium-firm, and that's because the head is heavy and needs good, stable support when we're lying on our side. In contrast, this scooms pillow is filled with soft and sumptuous feather and down, a filling that's renowned for its luxurious squish-factor.

However, if you're not a fan of firmer pillows, I think this is still a decent side sleeping option. It's so well packed with feather and down that its plump fill kept my head raised throughout the night, with less sinkage than any other feather and down pillow I've tried. If you're a side sleeper who sleeps with one arm under your pillow, this is also a great option because the malleable fill allowed space for me to curl an arm up under the pillow at night.

Plus, as a hot sleeper, I appreciated the cool sleep its feather-and-down fill provided, and it's also the only pillow in my shortlist that's fully machine washable. The synthetic options have removable covers that can be freshened up, but this pillow can go in the washing machine in its entirety.

That said, its softer filling did mean less stability for my neck, so my neck muscles did need to work a lot harder than when I slept on other options. Plus, it's expensive, and there's no sleep trial available. But if you know you love the feel of feather and down and you're just struggling to find the height for side sleeping, this pillow could be 'the one'.

How I tested

In order to thoroughly test the pillows in this round-up, I've slept on each pillow on my own bed for at least two weeks – in most cases far longer – to assess it for comfort and support when side sleeping.

Firstly, because finding the right height pillow is so key to a comfortable night's sleep as a side sleeper, I assessed whether each pillow comes in multiple height options.

Next, I tested each pillow to see how the filling performed during the night. Would my head sink into the pillow so that my neck was strained? Or did the pillow feel stable enough to keep my head and neck aligned with my spine during the night?

Because no one appreciates the sleep disruption that waking up with a hot head and having to flip a pillow over to find the cool side can cause, I also noted whether each pillow caused me – a self-diagnosed very-hot-sleeper – to overheat.

I then assessed ease of care – could the entire pillow or at least its cover be washed? – and whether the manufacture offers a sleep trial so you can test the pillow out for yourself before you commit to keeping it.

Lastly, I read every third-party review of each pillow I could lay my hands on to see how other owners were finding their pillows, and assessed each pillow's value for money before giving each pillow a star rating out of five.

Amy Lockwood

I'm Amy, Ideal Home's Sleep Editor and Certified Sleep Expert, and over the past five years, I've slept on over 50 different pillows (and counting) to find the best-in-class. All in all, that's over 10,000 hours of at-home pillow testing!

How to choose

When it comes to how to choose a pillow, your sleeping position is one of *the* main factors to consider. Research published by the National Library of Medicine reports that more than 50% of the population are side sleepers, and just like the best mattress for a side sleeper differs from the best mattress for a back sleeper, the same is true of pillows.

These are the main factors to consider when shopping for a pillow as a side sleeper.

Pillow height: If we're a side sleeper, it's vital to find the right height pillow. That's because we need our head, neck, and spine to be in good alignment while we lie on our side.

However, finding the right height pillow can be a challenge, as everyone’s shoulders are of different widths. Wider shoulders mean that we're likely to need more pillow height to keep our neck straight once we're lying on our side, and narrower shoulders mean we'll need less pillow height, so sometimes it can take a little trial and error to get the correct height.

Mattress tension: You also need to factor in your body weight and how soft your mattress is when considering pillow height. As Kora Habinakova, sleep and bedding expert at bedding specialist Sleepseeker, explains, ’lighter individuals are less likely to sink into the mattress and tend to prefer medium-thick pillows that will help to promote optimal spinal alignment when side sleeping. Those with heavier weight considerations are more likely to experience sinkage and may find a thinner pillow helps keep the head level with the spine.’

Pillow firmness: As side sleepers, we also need a stable pillow so that the head doesn't sink during the night. That generally means softer fillings, such as feather and down, are best avoided, and that the best type of pillow filling for a side sleeper is a firm filling, like a firm foam or memory foam. We need our head to be kept lifted up all night, and softer fillings can shift and allow our head to drop, putting strain on the neck.

Sleep trials: Because of these factors, my biggest tip when choosing a pillow as a side sleeper is to look for one that comes with a sleep trial. A sleep trial may differ slightly by retailer, but most allow you to purchase the pillow, sleep on it at home for a set number of nights, and return it for a refund (or sometimes exchange it for a different option) if you find it doesn't suit you. This is invaluable, as it's very easy to waste money on pillows that don't offer enough side sleeping support.

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