- Home
- Testing methodology
Testing methodology
Every recommendation on SleepCriteria follows the same process, so you can compare pages with confidence.
Construction and terms
Every mattress guide lists layers, materials, trial length and warranty terms from the brand, so you can compare like with like.
A clear verdict
Each guide says who the product suits, who should look elsewhere, and what to check before you buy.
No paid placements
Brands cannot buy a review or a spot on a list. Partner codes save you money; they never decide what we recommend.
Kept current
Prices are dated, codes are updated across the site at once, and pages are revised when a product, standard or rule changes.
Where our facts come from
We use manufacturers' published construction details (layers, foam density, coil count and gauge), certifications such as CertiPUR-US, OEKO-TEX and GOTS, trial and warranty terms, and published guidance from the American Academy of Sleep Medicine and the National Sleep Foundation.
What we check, by product type
| Mattresses | Type, layers and materials, firmness, edge support, motion isolation, cooling, trial and warranty. |
|---|---|
| Pillows | Loft for your sleep position, fill type, adjustability, cover material and washability. |
| Bedding | Fiber and weave, certifications, sizing and pocket depth, warmth and care. |
| Sleep tech | What it measures or does, accuracy claims, subscription costs, noise and app quality. |
| Trials & returns | Trial length, break-in period, return fees, donation policies and warranty coverage. |
Hands-on testing versus research
A review carries a "Hands-on tested" badge only when our team has used the product, and it lists the date and what we did. Every other page is built from published specs, governing-body rules, the brand's own documentation and owner feedback, and says so. Comparisons are research-based unless marked otherwise.
Prices and codes
Prices come from each brand's own store and are dated on every review. Reader codes come directly from the brands we partner with. When a brand changes an offer, we update the code everywhere it appears on the site at once.
Corrections
If you spot something out of date, email info@sleepcriteria.com and we'll check it and fix it.