How Mr. Squish researches pillows

We start from demand, not from affiliate programs. We look at what people are actually searching for by position (side, back, stomach, combination), by problem (neck pain, shoulder pain, overheating, CPAP, pregnancy), and by format (adjustable, cervical, body, wedge, travel, reading). Then we shortlist the pillows that dominate those conversations plus credible newer models that fill a real gap.

A pillow is never added to a best-of list because it pays better. A pillow with no affiliate program can and does outrank one that has one.

Pillows we test hands-on are either bought at retail or supplied by the brand as a review sample. Either way the terms are the same: no copy approval, no score approval, no embargo on criticism. When a pillow was supplied for free, we say so in the review's Sources & verification block.

A hands-on review requires a minimum of 14 consecutive nights with the pillow in a real bed. Two weeks is where the two things that matter most start to show: whether the fill keeps its loft after being compressed nightly, and whether the pillow that felt great on night one still feels great once the novelty wears off.

The exact start date, end date, and duration of each test is stored with the pillow's record and shown in the Mr. Squish testing box at the top of the review.

Loft is measured with a rigid ruler set against the side of the pillow, on a flat medium-firm mattress, at three points: unloaded height, height under a 10 lb head-weight load, and height again after the load is removed for 60 seconds. We record the unloaded figure at the start of the test and repeat the whole measurement at the end so loft loss is a number, not an impression.

We publish a measured loft only when we measured it. Where we have not, the review shows the manufacturer's advertised loft and labels it as such.

The compression test applies a 10 lb weight over the centre of the pillow for 60 seconds, then measures how much height comes back after one minute and after ten. This is what separates a fill that will still work in a year from one that will pack flat. Adjustable pillows are tested at the fill level we would actually recommend, not overstuffed.

Cooling is measured with a surface thermometer at the head contact point: a baseline reading in the room, a reading at lights-out, and a reading after six hours of sleep. We record the temperature rise rather than an absolute number, because room conditions vary. The tester's subjective experience — whether they had to flip the pillow — is logged alongside the readings.

On the side we are checking one thing above all: whether the pillow fills the gap between the ear and the shoulder so the neck stays in line with the spine. We look at head tilt from behind, whether the shoulder gets crushed or splayed, and whether there is any morning stiffness across the test period.

On the back we check chin position. Too much loft pushes the chin toward the chest and closes the airway; too little lets the head fall back. We note the loft setting that worked, and whether a contoured shape helped or got in the way.

Stomach sleeping already rotates the neck, so we test how flat a pillow can go and whether it stays flat under a face rather than rebounding. Adjustable pillows are stripped down to their minimum usable fill for this pass.

For adjustable pillows we log how much fill was removed or added to reach a comfortable setting, how messy the process was, whether the pillow can be refilled without spilling, and whether the fill can be redistributed by hand once it settles.

We follow the manufacturer's own care instructions exactly, run one full wash and dry cycle, and record what happened: shrinkage, clumping, fill migration, seam or zipper failure, drying time, and whether loft returned. The washing instructions we publish come from the manufacturer's documentation, stored once in the pillow's canonical record so every page on the site states the same thing.

Research reviews do not receive numerical ratings. We removed the previous overall scores and performance subscores because a decimal rating suggests a level of measurement that product specifications cannot support.

Recommendations explain the construction, intended fit, adjustment method, drawbacks, price context, and buying terms. Shortlist order is an editorial selection, not a measured performance ranking. The finder and loft tools use fit attributes rather than review ratings.

Comfort, overnight cooling, pressure relief, and long-term durability remain unmeasured unless a completed test record documents the method and result.

We distinguish three evidence levels. A completed hands-on review means a named tester slept on that pillow for at least two weeks and the measurements above were taken. Those reviews show a Mr. Squish testing box with the tester, the dates, and the results.

Firsthand experience and product research means a named contributor has confirmed personal experience, while specifications are supported by product documentation. The review identifies the contributor and limits the personal account to confirmed details. That does not establish a testing duration, a measured temperature advantage or long-term lifespan.

A research review means we have not slept on the pillow. It is built from manufacturer specifications, manuals, warranty and certification documentation, and category comparison — and it is labelled that way at the top of the page. We would rather tell you we have not tested something than imply we have.

Affiliate relationships do not determine rankings or recommendations. Mr. Squish earns a commission when you buy through some of the links on this site, at no cost to you. Commission rates are not an input to our recommendations, and nobody at a brand sees a review before it publishes.

When a factual error is pointed out to us, we correct it and update the fact-check date on the pillow's record. See our affiliate disclosure for the commercial details.

• Ben Trapskin

  Founder of Yawnder and publisher of Mr. Squish. Ben contributes firsthand experience with Coop to the Coop Original review; product specifications and personal experience are identified separately.

  Experience:

  Firsthand experience with Coop, confirmed October 16, 2026.