Posted by Chris Ailey
on September 12, 2026
Quick answer: what is the best pillow for side sleepers?
Side sleepers need a firm, higher pillow that fills the gap between the ear and the shoulder so the head stays level with the spine. A pillow that is too soft or too thin lets the head sink, bending the neck downward all night and leaving you stiff by morning. The most reliable choices are a supportive memory foam pillow, a natural pillow shaped for side sleeping, or an adjustable pillow you can set to your exact shoulder width. If you sleep warm as well, look for a cooling layer on top of the support.
More people sleep on their side than in any other position, and it asks the most of a pillow. Get it right and side sleeping is one of the healthiest ways to sleep. Get it wrong and it is the fastest route to a stiff neck and a restless night. This guide explains exactly what to look for, and which pillows suit side sleeping best.
Why side sleepers need more from a pillow
When you lie on your side, there is a real, measurable gap between your ear and the mattress, roughly the width of your shoulder. The pillow's whole job is to fill that gap completely, so your head, neck and spine stay in one straight, neutral line, exactly the posture you would hold standing up.
The problem is that broad shoulders create a large gap, and most standard pillows simply cannot fill it. Two things go wrong most often. A pillow that is too thin or too soft collapses under the weight of your head, so your head drops towards the mattress and your neck bends down. A pillow that is too flat does the same. Either way, the neck spends hours out of line, and you feel it in the morning as stiffness, aching or that crick that takes half a day to ease.
What to look for: height and firmness
Go higher than you think
Side sleepers need a higher loft than back or front sleepers. As a rough test, when you lie on your side your nose should line up with the centre of your chest, and your chin should be neither tucked towards your throat nor tipped up. If your head is dropping, the pillow is too low.
Choose firm over soft
Firmness matters as much as height, because a soft pillow gives way under your head and loses the loft you need. A firmer pillow holds its shape through the night and keeps supporting you at 3am as well as it did at 11pm. This is why moulded memory foam suits side sleepers so well: it supports consistently and does not flatten as the hours pass.
Consider an adjustable pillow
Shoulder width is personal, so the single most reliable way to get the height exactly right is an adjustable pillow, where you add or remove filling until it matches you precisely. For a committed side sleeper who has never quite found the perfect pillow, this often solves the problem for good.
Pillows that suit side sleepers
Two things define a good side-sleeper pillow: firmness and height. In the Luff bamboo range, the Cambridge is the firmest classic, rated 7 out of 10, and holds the shape of your head and neck rather than flattening beneath it. The Height Adjustable Prestige lets you tune the loft to your own shoulder width, and if you sleep warm as well, the Mayfair Cooling Gel pairs a firm 8 out of 10 core with a built-in cooling pad. All carry Luff's breathable, naturally antibacterial bamboo cover.
If you prefer a natural fill, the Laura Ashley range is a lovely alternative, and Laura Ashley even make a pillow shaped for the way you sleep. The Side Sleeper Luxury Cotton Pillow is designed to hold the higher, supported loft side sleepers need. For a natural fill with a little more structure, the Goose Down Surround pillow wraps a supportive core in soft down, while the Natural Wool pillow gives a firmer, breathable feel.
Supportive pillows for side sleepers
A few extra tips for side sleepers
Two small habits help beyond the pillow itself. A slim pillow or a cushion between your knees keeps your hips and lower spine aligned, which takes strain off your back. And if you tend to overheat, remember that side sleeping presses one side of your face into the pillow for hours, so a cool, smooth surface makes a real difference. A breathable bamboo cover, or a silk or bamboo pillowcase, keeps that contact point fresher through the night. Our note on silk versus bamboo pillowcases compares the two coolest options.
Frequently asked questions
How firm should a side sleeper's pillow be?
Firm. A soft pillow gives way under the weight of your head and loses the height you need, letting the neck bend. A firmer pillow, such as moulded memory foam or a supportive cotton side-sleeper pillow, holds its loft all night and keeps the head level with the spine.
How high should a pillow be for side sleeping?
High enough to fill the gap between your ear and shoulder so your head stays level. A good check is that your nose lines up with the centre of your chest when you lie on your side. Broader shoulders need a higher pillow, which is where an adjustable pillow helps.
Is memory foam good for side sleepers?
Yes. Memory foam gives the firm, consistent support side sleepers need and does not flatten through the night, so the head stays supported from lights-out to morning. If you prefer a natural fill, a pillow shaped specifically for side sleeping is a good alternative.
Why do I wake up with a stiff neck as a side sleeper?
Usually because the pillow is too low or too soft, so your head drops and your neck bends downward for hours. Moving to a firmer, higher pillow that keeps the head level almost always resolves it.
Should side sleepers put a pillow between their knees?
It helps. A slim pillow or cushion between the knees keeps the hips and lower spine aligned, easing pressure on the lower back and making side sleeping more comfortable.
