Pillows

The cheapest fix in the bed, and the one most people get wrong

People spend $700 on a mattress and then put a $12 pillow on it that they bought in 2019 and have never thought about since. If something in your bed is wrong and you can only change one thing, change the pillow first. It costs a fraction of a mattress, it's the single biggest lever on neck position, and it sits under the hottest part of your body.

Loft is the whole game

Loft means height. The job of a pillow is to fill the gap between your head and the mattress so your neck stays in line with the rest of your spine — no more, no less. That gap is set almost entirely by your sleeping position, which is why "the best pillow" isn't a thing that exists.

• Side sleepers need the most loft.Lying on your side opens a gap between your ear and the mattress roughly as wide as your shoulder. A thin pillow lets your head drop toward the mattress and bends your neck downward all night. Side sleepers want a high, firm pillow that won't collapse into that gap — which is a whole page.
• Back sleepers need medium loft. The gap is only as deep as the curve of your neck. Too much height pushes your chin toward your chest.
• Stomach sleepers need almost none. There is barely any gap at all, so a lofty pillow cranes the neck backwards. Some stomach sleepers genuinely do better with no pillow.

Your shoulder width matters here too, and it's why two side sleepers can need different pillows. Broader shoulders open a wider gap and need more loft to fill it.

Fill decides how the loft behaves over a night

Loft on the packaging is loft when new and unweighted. What you care about is the loft still there at 4am with your head on it.

• Solid memory foamholds its shape best and insulates worst. One piece of foam has nowhere for air to go, so it's the hottest option in the category.
• Shredded foam is the sensible middle: air moves between the pieces, and most shredded pillows let you take fill out to tune the loft to your body — the single most useful feature a pillow can have.
• Latex is naturally more open-celled, so it breathes better than memory foam and springs back rather than slowly sinking.
• Down and down-alternativefeel lovely and compress. They're comfortable for back and stomach sleepers and structurally wrong for most side sleepers, because they flatten into exactly the gap you needed filled.

If you sleep hot, start here

Your head throws off a serious share of your body heat, and it sits pressed into an insulating block all night. That makes the pillow an unusually efficient place to intervene — cheaper than sheets, far cheaper than a mattress. Our cooling picks are here, and the honest summary is that airflow beats gel: a shredded or latex fill that lets air move will out-perform a solid foam block with a cooling coating on top, because the coating saturates and the airflow doesn't.

If the whole bed runs hot rather than just your head, the pillow is only one part — sheets are the other cheap lever, and foam versus hybrid is the expensive one.

When to replace one

Fold it in half. If it stays folded instead of springing back, the fill has given up and it isn't supporting anything. Most foam and down pillows are done somewhere in the two-to-four year range; latex lasts longer. A pillow that has flattened isn't a pillow, it's a cover with regrets.

A note on what we don't do

We haven't slept on these. Everything above is geometry and material behaviour — things you can check yourself — rather than a verdict we're asking you to take on faith. If a page here starts telling you how a pillow "felt", something has gone wrong. This is our method. And if you have persistent neck pain, that's a question for a doctor — we're a review site, not a clinic.