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Cervical roll pillow: how a neck roll works and which size to get

By the Life in Good Form editors. Updated 2026-10-13.

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Quick answerA cervical roll pillow is a firm foam cylinder that sits under the curve of your neck, either on its own or tucked inside or under a regular pillow. It fills the gap between your head and shoulders so the neck does not sag. Rolls come in a few common sizes: Carex lists its Cervical Roll Pillow at 5 x 12 x 5 inches, and Sammons Preston lists a 4-1/4 x 18 inch roll. Choose the diameter by your neck gap and the length by whether you turn in your sleep.
Our picks at a glance
  • Firm memory foam cervical roll with zip cover. Best for: Back sleepers who want a compact roll under the neck. See options on Amazon
  • Long cylindrical neck roll, 17 to 18 inches. Best for: Side and combination sleepers. See options on Amazon
  • Soft low-density foam cervical roll. Best for: People who find firm memory foam uncomfortable. See options on Amazon
  • Replacement cover for a neck roll. Best for: Anyone whose roll has a fixed or worn cover. See options on Amazon

Compare the picks and what to watch out for

What a cervical roll does

When you lie on your back, there is a small hollow under your neck. On your side, there is a larger gap between your ear and your shoulder. A regular pillow often leaves that space empty, so the neck bends or sags. A roll fills it.

The Sleep Foundation describes the same idea with a homemade version: roll a hand towel and slide it along the long edge of your pillowcase. The roll can be shaped to fit the natural curve of the neck and fill the gap between the side of the face and the shoulder. It also notes that for back sleepers, a small pillow at the base of the neck can keep the head in a neutral position.

A foam roll does the same job but holds its shape all night and comes in set sizes.

Roll sizes compared

RollListed sizeMaterial and coverMaker's stated uses
Carex Cervical Roll Pillow5 x 12 x 5 inchesFirm memory foam; removable zip cover, machine washableUnder the neck, knees, back or ankles, between the legs, or as lumbar support when sitting
Carex Cervical Pillow (cylinder)4.5 x 17 x 4.5 inchesMemory foam; no removable cover, machine washable on a gentle cycleUnder the neck below a standard pillow; neck support for side sleepers; under the back or between the legs
Sammons Preston Cervical Roll4-1/4 x 18 inchesLow-density foam; washable, softer coverNeutral neck posture for back or side sleepers; also under the back, knees or ankles during recovery

If you searched for the Apex-Carex roll, the Carex product page is where to confirm current sizes and care. The page makes comfort claims but does not present the roll as a medical device or cite clinical testing.

How to pick the right roll

Where to place a cervical roll

  1. Back sleeping: lie down first, then slide the roll into the hollow under your neck, not under your head. Your head should rest on the mattress or a thin pillow behind it.
  2. Side sleeping: slide a longer roll along the bottom edge of your pillow or inside the pillowcase, so it fills the space between your ear and shoulder.
  3. Inside a pillowcase: this keeps the roll from rolling away overnight and is the setup the Sleep Foundation describes with a towel.
  4. Check alignment: the Sleep Foundation suggests photographing yourself lying down to see whether your neck is in line with your spine.

For a fuller break-in plan with any neck pillow, see how to use a cervical pillow.

Roll vs contour pillow

A roll is a simple, movable support you add to your own setup. A contour pillow builds a neck edge into a full pillow. A roll suits people who like their current pillow but want more neck support, and travelers. A contour pillow suits people who want one item that does everything. Compare them in our contour pillow guide and our broader pillow for cervical spine guide.

What to look for when you buy

Firm memory foam cervical roll with zip cover

Best for: Back sleepers who want a compact roll under the neck

A short, firm roll like the Carex 5 x 12 x 5 inch design fills the hollow under the neck and its zip cover can go in the washer.

Watch out: A 12 inch roll can slip out from under you if you turn your head often.

See options on Amazon

Long cylindrical neck roll, 17 to 18 inches

Best for: Side and combination sleepers

A longer roll stays under the neck as you turn and can sit along the edge of your pillow, the setup the Sleep Foundation describes for filling the ear-to-shoulder gap.

Watch out: Too wide for travel bags, and a roll with no removable cover is harder to keep clean.

See options on Amazon

Soft low-density foam cervical roll

Best for: People who find firm memory foam uncomfortable

Low-density foam, as in the Sammons Preston roll, gives gentler support while still helping keep a neutral neck posture.

Watch out: Soft foam compresses more, so it may lose height under a heavy head.

See options on Amazon

Replacement cover for a neck roll

Best for: Anyone whose roll has a fixed or worn cover

A slip-on cover lets you wash a roll that cannot go in the machine whole, and adds a softer surface against the skin.

Watch out: Measure diameter and length; a loose cover lets the roll twist.

See options on Amazon
When to talk to a doctor: A neck roll is a comfort aid, not a treatment. Stop using it if it increases your pain, and contact a doctor promptly if neck pain comes with fever, headache, pain in the arm or jaw, weakness in the legs, shortness of breath, or neck stiffness you cannot move through.

Questions people ask

What size cervical roll pillow should I get?
The rolls compared here run 4-1/4 to 5 inches thick. A 12 inch length suits back sleepers; a 17 to 18 inch roll suits people who turn or sleep on their side.
Do you put a neck roll under or inside your pillow?
Either works. Many people slide it inside the pillowcase along the bottom edge, which keeps it from rolling away, as the Sleep Foundation suggests with a rolled towel.
Can I use a rolled towel instead of a cervical roll?
Yes. The Sleep Foundation describes rolling a hand towel and placing it along the edge of the pillowcase. A foam roll just holds its shape better.
Can a cervical roll go under my knees or back?
Some can. Carex and Sammons Preston both list uses under the knees, back or ankles as well as the neck.

Sources

Sources checked 2026-10-13.