Short answer: We read the official product pages of 32 popular pillows and recorded what each one publishes. Half don’t state how tall the pillow is. Among adjustable-fill pillows, the ones sold on getting the height right, only 2 of 13 do. And 20 of the 32 give buyers 30 days or less to return a pillow, exclude pillows from returns altogether, or publish no return window.
Pillow marketing leans hard on “the right support for your sleep position.” The one number that decides whether a pillow supports your neck is its loft, the height between your head and the mattress. So we checked how often brands tell you that number, and what happens if you get it wrong and want to send the pillow back.
Key findings
1. The pillows sold on “adjustable height” are the least likely to tell you the height
Across all 32 pillows, exactly half publish a loft figure. The split by pillow type is stark. Fixed-loft pillows publish a height 74% of the time (14 of 19). Adjustable-fill pillows, the shredded-foam, zip-out and water-base designs marketed on letting you dial in the height, publish one just 15% of the time (2 of 13: Pillow Cube Side Cube Riser and Purple Freeform).
That means a buyer of an adjustable pillow usually cannot tell whether its full range reaches the height their sleep position needs, or how much fill to take out to get there. They find out by trial and error, inside a return window that is often 30 days.
2. Nearly two in three pillows give you 30 days or less, or no published window
Of the 27 pillows that publish a trial or return window, the median is 30 days. Thirteen offer exactly 30 days or nights. Both Tempur-Pedic pillows in the set are excluded from returns entirely except for defects. Five pillows publish no window on the product page at all. Add those up and 20 of 32 pillows (63%) give buyers 30 days or less to decide, or no stated window.
At the other end, Marlow offers 365 days, and seven pillows offer 90 to 100 days (Avocado, both Coop Sleep Goods models, Elviros, Tuft & Needle, Core Products Tri-Core and Therapeutica). Two brands show conflicting figures on their own sites: Helix states 30 days on the product page and 100 at checkout, and Sutera states 30 nights while also displaying a 90 badge. We recorded the product-page figure.
Why it matters: adjusting to a new pillow height usually takes more than a few nights, and a pillow that’s slightly wrong often shows up as morning neck stiffness rather than first-night discomfort.
3. There’s no standard for how loft is measured
When brands do publish a height, they don’t measure it the same way. Casper quotes its Original at 9.0 in uncompressed. Beckham Hotel Collection lists 8.0 in overfilled. Others give a single figure with no method, a range across sizes, or the height of a contoured edge. Core Products gives the Tri-Core’s overall height but not the height of its individual lobes.
We plotted every published figure against the range our pillow height calculator recommends for back and side sleepers (2.25 to 6.75 in, across frame sizes and mattress firmness). Three published heights sit above that entire range: Casper (9.0 in), Beckham (8.0 in) and Purple Freeform (7.5 in). That doesn’t mean those pillows are too tall. Soft fills compress a lot under a head. It means a shopper can’t compare the numbers, because an uncompressed height and a compressed working height are different measurements.
4. Price doesn’t buy more information
Among pillows with a published US price, the 14 that state a loft have a median price of $79. The 12 that don’t have a median of $112. The sample is small and shouldn’t be read as a pricing rule. But paying more didn’t get buyers more information in this set. Separately, 14 of 32 pillows publish no firmness rating, 11 publish no warranty term, and 7 aren’t sold in a queen size.
What shoppers can do
- Work out your target height first. The free pillow height calculator gives a range from your sleep position, shoulder width and mattress firmness.
- If a product page doesn’t state loft, ask the brand for the compressed height, the height with a head on it, before buying.
- Check the return window on the product page and at checkout, and screenshot both if they differ.
- With adjustable pillows, start high and remove fill in small steps across several nights, well inside the return window.
Method
We recorded 12 fields for each of 32 pillows from the manufacturer’s own product page in August 2026: fill type, whether a loft figure is published (and its value and wording), whether loft is adjustable, firmness rating, cooling claims, trial/return window, warranty, US price and stated sleep position. Every row links to its source page in the Pillow Specification Database. Anything a brand didn’t publish is recorded as “not published”, not estimated. The pillows are widely sold direct-to-consumer and clinical models chosen to cover the main fill types. They are not a random sample of the market. We did not buy, test or measure any pillow, and we accept no payment from any brand listed.
Limitations: product pages change, so figures reflect what was published when checked. “Not published” means not on the product page; a figure may exist in an FAQ or on request. The formula range in Figure 3 comes from Sleep Align’s published calculator and is a guide, not a clinical standard.
Data and free use
The full dataset is free to use under CC BY 4.0: CSV · JSON · browsable table. Charts on this page may be republished with credit.
Journalists: figures, quotes available for use, method and limitations, and the full dataset are gathered in our press kit.
Note on Helix, and why our two reports differ by one
This report counts a height as published only if it appears on the manufacturer’s own product page, which is how the 15 August dataset was built. On that basis 16 of 32 publish no height, and 11 of 13 adjustable pillows publish none. Our earlier Pillow Height Study was re-checked on 17 September and found that Helix had begun showing a height at checkout, though still not on the product page. Counting that, the figures become 15 of 32 and 10 of 13. The difference is one pillow and one methodological choice, not a revision. We have left both figures standing rather than quietly restating them.
Suggested citation: Sleep Align (2026). Pillow Transparency Report 2026: What 32 Pillow Brands Leave Out. sleepalign.org/pillow-transparency-report/
For journalists and writers: corrections, questions or a custom cut of the data (for example, by fill type or price band) — hello@sleepalign.org.