Side Sleeper Pillow Shop: Every Pillow We Recommend, by Need

Start here: how this shop is organized

Every product in the catalogue above comes from the same short list that powers our main guide to the best pillow for side sleepers. Each card links to Amazon, and where I have written a full review, it links to that as well. Directly below this section is a list of every buying guide in the shop, each built around one kind of sleeper: neck pain, broad shoulders, side-and-back sleeping, and so on.

If you already know your problem, jump to that guide. If you don't, read on. The short version comes from a Sleep Foundation guide reviewed by a physical therapist: side sleepers usually need a medium to high loft, which 'usually means using a pillow that is at least 4 inches thick.' The same page adds that broad shoulders may need more than 6 inches, and that if you sink deeply into your bed, even 4 inches may be too high. That spread is why the catalogue holds so many shapes and heights.

One caution before the details: no clinical source names a single best brand. Cleveland Clinic quotes chiropractor Andrew Bang: 'There isn't one type of pillow that will satisfy everyone's needs' (Cleveland Clinic).

7 kinds of side sleeper pillow, and who each one suits

Almost everything in the catalogue falls into one of seven groups.

1. Adjustable shredded foam

A zippered case of cut-up memory foam, often blended with fiber. You add or remove fill until the height feels right. The Sleep Foundation guide above says adjustable pillows 'can be a good choice if you are unsure what pillow loft you need.' Several list 8 inches when full, including the Coop Original and DreamyBlue, so most people take some fill out. See the best adjustable pillow for side sleepers and the memory foam picks.

2. Contour and cervical foam

A molded block with a raised edge under the neck and a dip for the head. Harvard Health tells side sleepers to use 'a pillow that is higher under your neck than your head' (Harvard Health). The trial evidence on contour shapes is mixed, though: a randomized study of 106 side sleepers found 'no evidence that the use of a foam contour pillow has advantages over the regular shaped pillows' (Gordon et al., 2009). Browse them on the cervical pillow page or the neck pain page.

3. Curved, crescent and cut-out

These have a scooped edge or notch so the pillow sits closer to your shoulder. The shoulder pain guide compares the Coop Crescent, Coop Cool+ Cut-Out, Sidney Sleep and Kucey designs.

4. Down alternative

Soft synthetic fiber, often sold in 2-packs. They feel plush but are not adjustable, and Amazon's buyer summaries for several mention flattening. They tend to suit people who also spend time on their back; see the side and back sleeper page.

5. Slim solid foam

Thin, fixed-height foam such as the Bluewave, offered in heights from 1.75 to 4 inches. Most side sleepers need the taller options; the thin ones fit people who also sleep on their stomach. That trade-off is on the side and stomach sleeper page.

6. Knee pillows

Small pillows that sit between the knees. Mayo Clinic says 'flexing your knees and having a pillow between your legs can help align your spine, pelvis and hips' (Mayo Clinic). Picks are on the knee pillow page.

7. Body pillows

Long pillows, about 54 inches for the ones in the catalogue, that you hug and hook a leg over. The same Mayo page adds: 'Use a full-length body pillow if you prefer.' Compare them on the body pillow page.

Two needs cut across all seven groups. If you want a firmer feel, start with the firm pillow page; if you run warm, start with the cooling pillow page. Broad-shouldered readers should go straight to the broad shoulders page.

How to use the filters above

The catalogue has two rows of buttons. The first filters by need: neck pain, shoulder pain, broad shoulders, cooling, firm, soft, adjustable, knee pillow, body pillow and more. The second filters by price band. The rows work together, so Shoulder pain plus Budget shows only the lower-priced pillows I have tagged for shoulder pain.

A few tips:

• Start with your main problem, not your budget. A cheap pillow at the wrong height is no bargain.
• If a filter leaves only one or two products, clear the price band before deciding nothing fits.
• Need tags are my editorial calls, based on each listing's height, shape and fill. They are not the brands' own labels.
• Each card shows the pillow type and, where the listing gives one, the listed height.
• The buttons only change what is shown. Every product is on the page from the start, so nothing is hidden from readers with scripts turned off.

Reading an Amazon pillow listing: height, packs and sizes

Most of the facts on a product card come from its Amazon listing, and listings are not always right. When I went through them for this catalogue, these were the things worth watching.

'Item Thickness' is not always the real height. The seller fills in that field. On the Beckham Hotel Collection listing it reads 0.25 micrometer, which is plainly an error, so I ignored it. On the Casper Original it reads 2 inches, while Casper's own site gives 9 inches uncompressed. When the two disagree, I record what the brand states and say where it came from.

Height is usually measured full and uncompressed. An 8-inch adjustable pillow is 8 inches before your head lands on it and before you remove any fill. Treat the number as a ceiling, not the height you will sleep at.

Measurements come with a margin. The Cozyplayer listing gives 5.1 inches but asks buyers to 'allow a slight measurement deviation of 0.5 to 1 inch.' That matters when the guidance itself spans only a few inches.

Other fields can be wrong too. The Coop Crescent's 'Item Weight' reads 9.6 ounces, which looks implausible for a full-size shredded-foam pillow. I record fields like that as stated and build no advice on them.

Check the pack count. The Beckham, Bedsure, Qutool and Supa Modern pillows are sold as 2-packs, and one listing often offers single, 2-pack and 4-pack variations side by side. Make sure the variation you pick is the one you meant.

Check the size against your pillowcase. Queen pillows in the catalogue run from about 26 to 30 inches long. Larger ones, like the DreamyBlue at 30 by 20 inches, may overhang a standard case. Contour pillows run smaller: the Royal Therapy Queen is 24 by 14 inches.

Check where the warranty comes from. Coop's 5-year warranty and 100-night guarantee appear on Coop's own site; the Amazon listing states neither.

What do CertiPUR-US, OEKO-TEX and GREENGUARD actually mean?

You will see these labels on many cards. Each is narrower than the marketing around it suggests.

CertiPUR-US certifies foam, not the whole pillow. Its FAQ says the program 'only certifies flexible polyurethane foam' and that 'Latex foam is outside the scope of our certification' (CertiPUR-US FAQ). Certified foams are made without formaldehyde, ozone depleters, mercury, lead and other heavy metals, or phthalates regulated by the US Consumer Product Safety Commission, and they have low VOC emissions, under 0.5 parts per million (CertiPUR-US). Note the word low: the program certifies foam as low in emissions, not free of them. Foam producers recertify every six months in the first year and annually after that.

OEKO-TEX STANDARD 100 is, in the association's words, 'a label for textiles tested for harmful substances' (OEKO-TEX). It does not mean organic or natural. Bed linens fall in its Product Class 2, for products with direct skin contact. Some listings just say 'OEKO-TEX' or name a different OEKO-TEX label; I copy the listing's wording onto the card rather than upgrading it.

UL GREENGUARD Gold is a chemical-emissions certification. UL says the Gold tier 'sets even lower VOC emission limits' and limits emissions of more than 360 VOCs (UL Solutions). In the catalogue, the Coop pillows and the Oubonun body pillow list it.

What none of these labels tell you is whether the pillow is the right height, how it feels, or whether it will help your neck. They are about materials and emissions only.

When to wash it, and when to replace it

Care starts with the label. Sleep Foundation's washing guide says to 'always follow the manufacturer's specific guidelines,' because many feather and down pillows can only be dry cleaned (Sleep Foundation). Its basics:

• Most pillows can take warm water, a gentle cycle and a small amount of mild detergent.
• Solid memory foam pillows should not be machine washed, because the foam can crack or degrade. That includes the contour and slim foam pillows here.
• Let a pillow dry fully before using it, on the lowest heat over several cycles.

Sleep Foundation's replacement guide adds that pillowcases should be washed at least once a week (Sleep Foundation). It says 'most experts recommend replacing pillows every 1 to 2 years,' and breaks that down by material: memory foam and polyfoam 2 to 3 years, down alternative about 1 to 2 years, polyester 6 months to 2 years, latex 2 to 4 years. Neither page lists a medical reviewer, so treat these as practical rules of thumb.

For down and feather pillows, the same guide suggests folding the pillow in half: if it doesn't spring back, it is time for a new one. For allergy-prone homes, NIEHS advises encasing pillows in dust-proof covers and washing bedding weekly in hot water, 130 to 140°F (NIEHS). Check the care label first, since hot water can damage down and feathers.