Every mattress fact in one place, each one sourced and last checked.
Nappedia is a independent mattress research library built for US mattress shoppers who want facts before they spend. Every spec, price, and warranty term you see here comes from the maker's own site. Each fact names its source and the date we checked it. Nothing on this site is estimated, scored, or paid for by any brand.
If you buy through this link, Nappedia may earn a commission at no extra cost to you - it does not influence our research or rankings.
All 516 brand pages in one place
The library documents each maker's full catalogue rather than a curated short list chosen by an editor. Every brand page lists the models, counts, specs, and warranty terms exactly as the maker states them, with the source page named and the date we last pulled that information, so you can verify it yourself.
| Brand | Models covered | Page |
|---|---|---|
| Saatva | 42 | Read the pages → |
| Tempur-Pedic | 646 | Read the Adapt page → |
| Sealy | 1,305 | Read the pages → |
| Serta | 1,118 | Read the pages → |
| Purple | 24 | Read the pages → |
| Casper | 38 | Read the pages → |
| Avocado | 16 | Read the pages → |
| WinkBeds | 20 | Read the pages → |
| Helix Sleep | 45 | Read the pages → |
Model counts reflect the pages this directory publishes for each brand, last checked 2026-09-20. Counts change when makers add or retire models.
Brand pages built from what each maker publishes
A Nappedia brand review covers one maker from top to bottom. It is built for shoppers who want the full picture before they buy - lineup, pricing, and materials - pulled from the maker's own pages.
All 516 brand pages follow the same structure, so the same fields appear in every review. Nothing is added or removed based on the maker. Browse all brand reviews →
Six model pages drawn from what each maker publishes
Each page captures the maker's specs, dimensions, and prices from the maker's own site with the source page and the date we checked it beside every figure. Nothing here is estimated or altered. Photos are the maker's own studio shots, not images we produced.
Dual-coil innerspring hybrid
Saatva Classic
The maker lists two profiles, 11.5 in and 14.5 in, with coil counts and firmness options sourced from the maker's product page.
Read the page →
High-density hybrid
HD
Built for heavier sleepers within the weight range from the maker's site, with construction specs drawn directly from the official page.
Read the page →
Latex over pocketed coils
Latex Hybrid
The maker publishes a natural latex comfort layer above pocketed coils, with each layer thickness listed on the product page.
Read the page →
Memory foam
Loom and Leaf
A memory foam build sold under its own name, with every layer spec and firmness option drawn from the maker's own site.
Read the page →
Two-sided latex
Zenhaven
The maker lists a softer face and firmer face on the same mattress, with each side's firmness sourced from the product page.
Read the page →
Air over coils, adjustable firmness
Solaire
Sold under its own name, with the maker's firmness settings and adjustable-air construction sourced from the official page.
Read the page →
Six models lined up side by side
Every page in the library follows the same layout, so the comparison view can line them up side by side. Gaps appear where a maker has not published a figure, keeping the table honest about what is and is not on the maker's site.
| Model | Firmness as listed | Page |
|---|---|---|
| Saatva Classic | Plush Soft 3, Luxury Firm 5-7, Firm 8 | Read the pages |
| Saatva HD | 5-7 | Read the pages |
| Saatva Latex Hybrid | 6 | Read the pages |
| Loom and Leaf | 5-7 and 8 | Read the pages |
| Zenhaven | 4-5 and 7-8 flippable | Read the pages |
| Solaire | 50 settings | Read the pages |
The table lines up model type, firmness, and fire barrier wording for six beds side by side. Each model page carries prices from the maker's own site along with the page where those prices appeared and the date each price was checked. Compare any two pages →
Why our reviews are different from other sites
Shoppers often find pages full of personal opinions and ratings with no named sources and no dates. This library records what mattress makers publish, names every source, and marks what stays unverified rather than filling gaps with estimates.
How we review every mattress
Each page moves through five review stages, each with a source - licensing, construction, safety, pressure, and consensus. The library records what makers publish at every stage and clearly marks what stays unverified.
What we check: We document the maker's business entity, published warranty terms, trial policies, and official law tag registrations exactly as stated on the maker's pages.
What we cannot tell you: We cannot tell you whether the company will honor its warranty, process your return on time, or remain in business through the life of the mattress.
What we check: We record the layer build from the maker's site, coil details, cover fabric, and every construction spec the maker lists on the official product page, with the source named.
What we cannot tell you: We cannot report unpublished foam densities, adhesive formulas, or how the mattress will feel to sleep on, because the maker does not publish those figures.
What we check: We record the maker's exact wording on seals and note whether the certificate itself is published or linked on the maker's page.
What we cannot tell you: We do not run chemical tests on materials ourselves, and a seal stays unverified on our page when the maker does not publish the certificate.
What we check: We document the maker's stated firmness rating, body weight advice, and claims about pressure relief, exactly as the maker writes them.
What we cannot tell you: We do not measure firmness or run pressure mapping tests, so we cannot say how a specific bed will support or feel for your body.
What we check: We record owner feedback from the maker's site, common buyer complaints, and reported wear patterns that appear across publicly accessible sources.
What we cannot tell you: We cannot measure long-term sag rates or predict how many years a specific mattress will hold up, because that data is rarely published by makers.
How we decide what to trust
The library rates the evidence behind each finding, not the mattress. A well-supported finding gets a higher evidence state than an unsupported one, regardless of which maker it involves.
The library does not score or star-rate mattresses, and no maker can buy a position or influence how a claim is indexed or labeled.
Sources named, last checked, and no paid ratings
Every claim carries a maker's site and the date we checked it, with no paid influence on any figure. When a maker withholds a spec, the page marks it unverified instead of filling the blank with a guess.
What the research library holds
The research library holds clinical and materials studies that are relevant to mattress buying. It is kept to primary sources only, and every claim carries one of three states: cited, citation needed, or sources disagree.
The library holds 388 research pages as of 2026-09-20. Every page is sourced, and claims without a confirmed citation are marked as citation needed. Open the research library →
Safety labels and standards a mattress carries
Safety seals show which materials meet clean-air or organic standards set by independent bodies. The library records the maker's claims, names the source page, and flags any certificate the maker did not publish.
CertiPUR-US
Covers emissions and content in polyurethane foam, ruling out harmful heavy metals and high-VOC off-gassing.
OEKO-TEX Standard 100
Screens finished fabrics and components for harmful chemical substances at every stage of processing.
OEKO-TEX Made in Green
Checks textiles for harmful substances produced in facilities that meet social responsibility standards.
GREENGUARD Gold
Limits chemical emissions and volatile organic compounds released into indoor room air from finished products.
GOLS Organic Latex
Confirms organic status and processing standards for natural rubber latex used in mattress comfort layers.
GOTS Organic Textile
Sets organic fiber standards, chemical limits, and fair labor requirements across the full textile production chain.
FSC Certified
Tracks wood and forest materials from responsibly managed forests through to the finished product.
Cradle to Cradle
Assesses material health, clean air, water stewardship, and the circularity of a product at end of life.
USDA Organic
Restricts synthetic fertilizers and pesticides on agricultural crops such as cotton and wool used in mattresses.
eco-INSTITUT
Monitors finished products for trace emissions, heavy metals, and chemical substances that could affect indoor air.
Formaldehyde-free
A label claim that no added formaldehyde was used in the manufacture of the materials carrying the label.
Fair Trade
Confirms fair wages and safe conditions for workers, and directs a portion of revenue to community development funds.
Rainforest Alliance
Sets farming and sourcing standards for crops such as natural rubber and cotton grown for mattress materials.
Green America
A business certification for companies that meet social and environmental responsibility criteria across their operations.
Control Union
An inspection body that issues organic and textile certificates including GOTS and GOLS on behalf of the certifying bodies.
For every seal listed here: we record the maker's exact wording, name the page where it appears, and mark the seal unverified if no certificate is published alongside the claim.
Seals are copied from the maker's own product page and printed on our page, with the source page named. Their presence here is a transcription, not an endorsement by Nappedia or by the certifying body.
Questions answered using what the maker publishes
Six common questions are answered here directly from what the maker publishes, with nothing added from outside those sources.
How is Nappedia different from other mattress review sites?
Shoppers often encounter personal opinions, no named sources, and no visible dates on the pages they find. Nappedia records what mattress makers publish, names the exact source page for every single fact, and prints the date we checked it. There are no paid ratings on this site, and no brand pays for placement.
If Nappedia has a page for a mattress, does that mean we tested it?
No. Nappedia does not handle beds, open boxes, or sleep on any mattress. Every page shows what the maker publishes, the date that information was checked, and where you can go to verify it yourself. We never describe a test we did not run.
Can the library tell me how a mattress will age?
No, because makers rarely publish long-term sag rates or durability data in their public materials. The library records published warranty terms and available buyer feedback, but it cannot predict wear for any individual. When a maker does not publish this information, the page clearly marks that gap as unverified.
Why is a fact missing from a mattress page?
A missing detail means the maker did not publish it in any source the library could locate. Common gaps include foam densities, adhesive formulas, and long-term sag figures. The library refuses to estimate or fill in missing specs, so every page states exactly what remains unverified rather than inventing a number.
Where do the prices on your pages come from?
Prices come directly from the maker's official website and nowhere else. Every price on a page names the exact page where the figure appeared and the date we checked it. No price is guessed, rounded, or carried forward from an outdated source without a new check and a fresh date.
How does Nappedia make money?
Some links earn a commission if you buy a mattress through them. That payment never buys a rating, a ranking, or a favorable date. There are no paid placements on this site, and no maker reviews or approves a page before it goes live to readers.
No questions matched that search. Try foam, warranty, price, or sag.
Counts last checked 2026-09-20. Recheck before quoting a figure.