An adjustable shredded cotton pillow you can set to your own height
Your answers point to shredded or loose cotton in a zipped cover, which you fill to your own height and top up when it packs down.
Updated .
In short: Loose cotton fill in a zipped cover, a percale shell if you run warm, and a height you set and reset to suit your bed and shoulders.
The specification
| Part | What this result calls for | Source |
|---|---|---|
| Fill form | Shredded or loose cotton fibre that shifts inside a zipped cover, rather than one sewn layer. | Batting versus shredded cotton fill |
| Loft (height) | There is no fixed figure, because the height is set on the sleeper's own bed. One lab study had people lie on pillows from 110 mm to 170 mm high and found average cranial pressure at the 170 mm height about 30% higher than at 110 mm. | PMC5012320 |
| Fill weight | A seller's specification for a zippered cotton-filled pillow gives at least two pounds of cotton batting. | Cotton-filled pillow listing, weight by size |
| Cover weave | Percale for a warm sleeper and either weave for a cool one. One seller lists organic cotton percale pillowcases at 300 thread count. | Percale pillowcase listing |
| Can it be adjusted | Yes, through a zip that opens onto the fill. One seller states that cotton batting can condense over time to about half of its original volume, so the zip is also how the height comes back. | Cotton-filled pillow listing |
The figures here come from sellers' published specifications and the textile sources cited on this site, and no pillow was weighed or tested for this page.
Where your answers lead in cotton
Side sleeping asks the most of a pillow, because the fill has to bridge the gap between the mattress and the ear. Shoulder width sets the size of that gap. Broad shoulders widen it, narrow ones shrink it, and average ones leave the mattress to decide. A soft mattress lets the shoulder sink and takes some height away, while a firm one keeps the body high and leaves the pillow to supply all of it. In a study of side sleepers, cervical curve morphology and optimal individualized pillow height are well predicted by an index that combines shoulder width and pillow height, so no single sewn-in height suits everyone. Height also changes the load on the head: in one lab study, average cranial pressure on a 170 mm pillow was about 30% higher than on a 110 mm one.
Changing position through the night favours loose fill for a second reason. It can be pushed so one end sits higher for side sleeping and the other lower for lying on your back. A sewn layer of cotton cannot do that. For a sleeper willing to open the pillow, a zipped cover full of loose cotton is the forgiving choice. A wrong height on the first night becomes a change to make, not a pillow to put up with.
A pillow that went flat points the same way. Cotton packs down under weight too. Loose fill can be teased apart and topped up, as the guide to why cotton pillows flatten explains.
What would change the cotton fill
This whole result rests on opening the zip. Without that, a fixed batting pillow sewn close to the height of your current one makes more sense. Mostly back sleeping calls for a moderate, even height, so fill comes out until the chin no longer tips toward the chest. Narrow shoulders on a soft mattress point lower still.
Temperature changes only the shell. A percale cover suits a warm sleeper, since its plain one-over-one-under weave leaves more room for air than sateen, whose threads pass over several others at a time. One seller lists organic cotton percale pillowcases at 300 thread count. Sleeping cool leaves the cover free to be chosen for feel.
Cleaning is the other variable. Washing the cover and airing the fill is how most cotton pillows are meant to be kept. Putting the whole pillow in the machine is riskier, because wet cotton mats and dries slowly, so read can you wash a cotton pillow before trying it.
Checking the fill on your own pillow
Lie on your side on your own mattress, in the position you fall asleep in. Ask someone to look along the line from the middle of your back to the back of your head. It should run roughly level, with the head tipping neither down toward the mattress nor up toward the ceiling. If it tips down, add a handful. If it tips up, take one out. Make 1 change per night, since cotton settles over the first few nights and an early verdict can mislead. Then roll onto your back and check that the chin is not pushed toward the chest. For a sense of scale, one seller's specification puts at least 2 pounds of cotton batting in a zippered pillow and says batting can condense to about half its original volume over time. Keep whatever comes out in a cloth bag, because that is the cotton that goes back in when the pillow sits lower months later.
Other cotton pillow pages
- What is inside an organic cotton pillow, and what forms does the cotton take?
- How do batting and shredded cotton fill change between night one and night three hundred?
- Why do cotton pillows flatten, and how much of it can you reverse?
Back to match a cotton pillow to how you sleep
Sources
The cotton spec sheet's outside references, one line apiece, tagged with the section that cites them.
- One lab study (ncbi.nlm.nih.gov), cited under “The specification”; “Where your answers lead in cotton”.
- Cotton-filled pillow listing (ceceswool.com), cited under “The specification”; “Checking the fill on your own pillow”.
- Percale pillowcase listing (sleepandbeyond.com), cited under “The specification”; “What would change the cotton fill”.
- study of side sleepers (link.springer.com), cited under “Where your answers lead in cotton”.