Mattress Materials (2026)

If you read nothing else on this page, these six points carry most of it:

Choosing rather than studying? The buying guide runs the whole decision in order, and the mattress finder turns it into ten questions.

Every layer in every mattress is doing one of seven jobs. Once you can name the job, the material choice stops looking random.

Two things fall straight out of that table. Neither gets said on Indian product pages.

• The core is the weak point. It is usually the cheapest material in the mattress. It is also the one carrying the load. Industry references put a worn support core as the most common reason a mattress dips in the middle, whatever the total thickness says.
• Comfort and cooling fight each other. The closer a mattress hugs your body, the more skin touches it and the less air can move. That is why memory foam sleeps hot. It is not a defect. It is the same property that gives the pressure relief.

You cannot judge a material by its name. These are the measures that predict how it behaves, and the ones to ask a seller for.

1. Density (kg/m³) — predicts how long it lasts

Density is how much polymer sits in a given volume. More polymer means thicker cell walls. Thicker walls survive more nights before they collapse for good. Per Sleep Foundation, it is the best single durability predictor for any foam.

It is not firmness. A foam can be dense and soft, or light and firm. These are the working bands:

Unit trap. American sources use PCF, pounds per cubic foot. One PCF is about 16 kg/m³. So "5 PCF memory foam" means roughly 80 kg/m³.

2. ILD — predicts firmness

Indentation Load Deflection. A plate presses into a foam sample until it has squashed a quarter of the way down. The force needed, in pounds, is the ILD. Low numbers around 8 to 15 are very soft. Anything above 45 is very firm. India uses a similar measure for coir, called the indentation hardness index.

3. Support factor — predicts whether you bottom out

How much harder a foam gets as you sink deeper into it. Technically it is the force to compress the foam 65% divided by the force to compress it 25%. A high support factor means the foam cushions at the surface but pushes back at depth. That is what stops a heavier sleeper landing on the core.

India makes this a requirement. IS 7933, the standard for mattress polyurethane foam, says the indentation load quotient shall be at least 1.9:1. HR foam is usually specified at 2.4 or higher.

4. Compression set — predicts the dip

The percentage of thickness a material never gets back after being squashed. It is the lab version of the body-shaped hollow. The Indian standards put hard limits on it, and these are almost never quoted in shops:

• PU foam: compression set must not exceed 10%. After the fatigue test, hardness loss must stay under 30% and thickness loss under 10%. (IS 7933, clauses 3.10 and 3.11.)
• Rubberized coir: compression set must not exceed 18% aged, or 15% un-aged. (IS 8391 Part 1, clauses 7.5 and 7.6.)

5. Cell structure — predicts heat and monsoon behaviour

Open cells connect to each other, so air can move through the foam. Closed cells trap it. IS 7933 requires mattress PU foam to have cells that are "essentially open and inter-connecting".

The related property is how much water a material pulls out of the air. Coir and cotton absorb a lot. Latex, PU and polyester barely absorb any. In a coastal monsoon this is the property that decides whether a mattress grows mould.

Foamed and vulcanised rubber. Natural latex is sap from the rubber tree. Synthetic latex is styrene-butadiene rubber, made from petroleum. Both get foamed the same way, and both are legally called "latex".

Dunlop and Talalay are the difference that matters

Two processes, two materials. Per Sleep Foundation and specialist trade sources:

One myth worth killing. At the same ILD, both take the same force to compress. Dunlop only feels firmer because it is denser at the surface. If you tried latex once and found it hard and rubbery, you probably tried firm Dunlop. Talalay does not feel like that.

Pincore holes are the round holes moulded through a latex sheet. They start as a manufacturing need, letting heat reach the middle of the slab. In the finished mattress they cut weight, soften the sheet and act as vertical air channels. Bigger holes in one zone make that zone softer. That is how zoned latex is made.

Why it appears at every level

Latex is the one foam used at every depth of the stack, and for a different reason each time:

• Top layer: usually Talalay. Pressure relief with instant recovery, so no stuck feeling. Good for people who change position a lot.
• Transition layer: medium Dunlop, buffering a soft top from a hard core or a spring unit.
• Support core: firm Dunlop. High density and high support factor make it one of the most sag-resistant cores sold.
• Over springs: the springs carry the load and the air. The latex spreads weight so you never feel a coil.
• Inside coir: latex is the binder that turns loose coconut fibre into a springy sheet. Here it is not a layer at all.

A note on latex hybrids. The latex really is on top, and there is a reason for it — bury latex under memory foam and you waste both its bounce and its airflow. But the amount is often small. At Indian mid-market prices, a latex hybrid often means 25 mm of latex over 150 mm of springs. The latex is real. It is also about a tenth of the mattress.

What it does well

• Coolest of the foams. Open cells plus pincore channels move heat and moisture out. Sleep Foundation rates it closer to temperature-neutral than memory foam.
• Longest-lived. Sleep Foundation's material data puts the average at 7.5 to 8.5 years, and 10 to 20 for quality all-latex builds.
• Best foam for heavier bodies, because the support factor resists bottoming out.

How it fails

Latex does not mainly sag. It oxidises. Over roughly 10 to 12 years even good natural latex yellows and starts to crumble, and specialist sources report that sunlight and moisture speed the process up.

That matters here more than anywhere. Sun-drying a mattress is normal in India, and it is the right thing to do for cotton and coir. For latex it is the wrong thing to do.

The other trade-offs are practical ones:

• Weight: an all-latex queen is genuinely heavy. Think about your staircase.
• Base: latex follows a bad base. On a sagging frame it will sag too.
• Smell: a rubber odour on unboxing, which fades.
• Allergy: the most cited worry and the least likely. Manufacturing washes out most of the proteins and the foam sits under fabric. A diagnosed latex allergy should still avoid it.

The labelling problem

"Natural latex" is not a regulated term. Blends run anywhere from 30% to 94% natural content, and a core that is 70% synthetic can still be sold as natural latex with no ratio given anywhere.

Two things substantiate the claim, and only two:

• A GOLS certificate, which requires at least 95% certified organic latex and audited traceability. Synthetic latex cannot be GOLS certified.
• A full eco-INSTITUT or OEKO-TEX test report on the actual foam. This is the weaker route. The badge on its own covers harmful substances, not how much of the latex is natural, so you have to read the report.

Our ranked picks are in the best latex mattresses roundup.

This is one chemistry tuned into four very different materials. Knowing they are relatives explains most of the naming confusion in Indian retail.

PU foam — the one where density is everything

The default flexible foam. It turns up as the 10–20 mm quilting under the cover, as a transition layer, and in budget mattresses as the whole core.

Indian mattress PU is commonly sold at 28, 32 and 40 kg/m³. The durable band is 32 to 40. Foam below 24 kg/m³ is topper material, and using it as a core is the classic recipe for a mattress that dips in two years. Trade sources report that a 20 kg/m³ foam can lose a third to a half of its thickness within three years of daily use.

IS 7933 sets a floor of 27 kg/m³ for the core. Two caveats: that standard dates from 1975, and a floor is not a target.

"HD foam" is not a grade. It means whatever the seller wants. High density with no number attached is not information.

HR foam — a different chemistry, not just denser PU

High resilience foam uses a different polyol system, which gives it a more irregular cell structure and much higher bounce. The usual spec is resilience above 50%, density of at least 40 kg/m³ and a support factor of 2.4 or better. Trade references put its life at 7 to 10 years.

It is the right core material for a foam mattress with no springs, coir or latex in it, because it is the only PU-family foam with enough support factor to feel comfortable without feeling like a board.

Watch the abbreviations. HD is not HR. One is a chemistry with a published spec. The other is an adjective.

Memory foam — pressure relief, bought with heat

Polyurethane with additives that make it viscoelastic. It responds to pressure and to temperature, softening under body heat and recovering slowly. It came out of a 1966 NASA contract for aircraft seat cushioning.

It belongs on top, and only on top. Its whole value is pressure relief, and pressure relief only happens at the surface. Buried under anything it does nothing except add cost and hold heat. It is also far too soft and too slow to work as a core.

• Strengths: the best pressure relief and the best motion isolation of any material. The same slow give that cradles a shoulder also swallows a partner's movement.
• Heat: trade sources report traditional memory foam sleeping 3 to 8°F warmer than latex or springs. The dense cells and the large contact area both cut airflow.
• Density: mattress-grade runs 50–80 kg/m³. Sleep Foundation's durable threshold is around 80 kg/m³.
• How it fails: it softens for good. Because it is heat-sensitive, a warm Indian bedroom keeps it at the soft end of its range every night.

Our ranked picks are in the best memory foam mattresses roundup.

The same foam is sold as a pillow, where the heat sensitivity matters far more. The pillow fill guide covers that.

Gel, graphite, copper and charcoal — an evidence check

This is where the category oversells hardest, so here is what holds up:

• Gel: Sleep Foundation's own analysis of best-selling gel models found them comparable to plain memory foam for temperature, and concluded gel "is likely not a feature that you need to specifically seek out". Their real cooling gains came from coil construction.
• Graphite: genuinely more conductive than gel, and claimed not to saturate the way a gel heat sink does. No independent long-run data was found.
• Copper: the antimicrobial property is real. But the particles have to touch microbes to work, and inside a foam slab most microbes live in the cover. There is no credible independent evidence for the joint or inflammation claims.
• Bamboo charcoal: marketed for odour and moisture. No independent testing was found.

The honest version: an infusion is a heat sink, not a heat pump. It absorbs some heat at first contact and then fills up. In a 28°C bedroom with no AC, it has nowhere to put that heat. Cooling in a mattress is mostly a matter of structure, not additives.

Convoluted foam — the egg-crate cut

A foam sheet cut into peaks and valleys. It is used for three reasons, and the third one rarely gets mentioned:

• Airflow: the valleys are channels for warm air to leave through.
• Point relief: each peak gives under only the weight directly above it, so it feels softer than solid foam of the same grade.
• Cost: the cut removes material. A profiled layer uses less foam than a solid one of the same nominal thickness.

Worth knowing: because the peaks squash easily, a convoluted layer has less usable thickness than its label suggests.

Rebonded foam — waste turned into a core

Shredded PU offcuts, pressed and glued into dense firm blocks. It is the core in a large share of Indian "orthopaedic" mattresses in the ₹5,000 to ₹12,000 band, and it is a legitimate core material: dense, cheap and very firm.

It also has almost no bounce, which is exactly why it is always found under something softer. Brands claim 6 to 8 years of service; we found no independent durability data for Indian rebonded foam. Its failure mode is not a smooth dip but localised breakdown at the bond lines, so it goes lumpy rather than hollow.

Not loose coconut husk. Rubberized curled coir is a manufactured, standardised material, and IS 8391 defines it precisely: curled coir fibre "coated and bonded with natural rubber, synthetic rubber or a combination of both", then vulcanised.

Read that again. The rubber may be synthetic. "Rubberized coir" carries no promise that the binder is natural latex. That is a common and expensive misunderstanding.

How it is made, and why the process matters

Coir fibre is extracted, fed through curling machines into parallel strands, twisted into curled rope, layered into a fleece, then sprayed with a latex compound on both faces and pressed under heat. Thickness and density are both set during that press.

The insight is in the curling. Coir fibre on its own has almost no spring — it is stiff, and it stays where you put it. Curling gives each fibre a coil shape. The latex then fixes the fibres where they cross, so the whole sheet can store and return energy. Rubberized coir is best understood as a natural spring mat, not as a foam.

The grades — the numbers to ask for

IS 8391 Part 1 grades coir sheets on indentation hardness and density:

Three things about that table are worth knowing:

• There is no soft grade. The standard starts at Medium. Coir is a firm material by definition.
• Density is optional. Clause 7.1 says the density requirement "is optional and has been given for guidance only". The graded property is hardness. So a coir density figure on a listing is the maker's number, not a certified one.
• A harder middle is allowed. The standard permits the central third to run up to 15% above the grade maximum, for reinforcement. A stiffer centre zone is by design, not a fault.

The standard also caps pH between 5 and 8.5, chloride at 0.3% and sulphate at 0.2% by mass. Those limits exist because coir is often processed in brackish water, and leftover salt attracts moisture.

Where it sits

• Support core. This is coir's real job. A 50–100 mm slab, almost always sandwiched between foam layers. That is the "ortho coir" build, and the foam on top exists purely because coir alone is too hard and too textured to sleep on.
• Firm transition layer, under memory foam or latex in premium multi-layer Indian mattresses.
• Both faces of a flippable dual-comfort mattress, with different foam on each side.

What it does well, and where it does not

• Airflow: an open fibre matrix with continuous void space. The most breathable non-spring material, which is why it survives in hot dry regions.
• Flat, firm support with almost no contouring. Good if you want the spine held rather than cradled.
• No pressure relief at all. On bare coir, a side sleeper's shoulder and hip take the whole load. That is why every consumer coir mattress has foam on top.
• It compacts, it does not dent. Fibres migrate and settle, so the mattress gets thinner and harder rather than developing a clean hollow. Brands typically claim 5 to 7 years, less for cheap coir.
• It pulls moisture from the air. Manufacturers' own care guides acknowledge this. Trapped moisture supports mould, algae and mites.

The fix for the moisture problem is airflow, not waterproofing: a breathable protector rather than a plastic-backed one, a slatted or ventilated base rather than a solid box-bed top, and regular airing.

The honest verdict. Coir is an excellent support core and a poor comfort layer, and it is sold here as if it were both. "Coir mattress" nearly always means "foam mattress with a coir core". The foam decides how it feels. The coir decides how long it lasts.

Steel does something no foam can. It stores energy in a shape rather than in a material, so it can carry weight through a mostly empty volume. That empty volume is airflow. A spring unit is the best support material and the best cooling material at the same time, which is the whole reason hybrids exist.

The coil types

The two numbers, and which one is oversold

• Gauge is wire thickness, and the scale runs backwards. A lower number means thicker wire. Most mattresses use 12 to 15. The 12 to 13 range gives a firmer, tougher unit; 14 to 15 gives a springier, softer one.
• Coil count matters far less than the ads suggest. The useful range for a queen is roughly 600 to 1,000. Past that it is mostly marketing. Gauge, coil type, whether the steel is tempered and how the edge is reinforced all predict durability better.

Zoning and edge support

Because pocket coils act alone, a maker can vary the gauge across the mattress — firmer under the lower back, softer at the shoulders. Zoning is real engineering when it is done with gauge. It is decoration when it is only printed on the cover.

Edge support has two solutions, and they behave differently:

• Foam encasement: a dense foam rail around the perimeter. Comfortable, and it extends the usable surface to the edge. But dense foam compresses over time, and trade sources note it softens faster in warm climates.
• Heavier-gauge perimeter coils: the outer rows wound from thicker wire. Keeps the pocket-coil independence right to the edge and stays steadier as weight shifts.

Without either, you lose usable sleeping surface and the sides sag early. That matters more here than the category admits, because in a smaller flat the bed is also where people sit.

One failure mode nobody mentions: in a pocket unit, the fabric pockets and their seams can give out before the steel does.

Our ranked picks are in the best pocket spring mattresses roundup.

Polymer grids

A stretchy polymer moulded into an open grid of walls, sold in India as SmartGRID and elsewhere as GelFlex. The mechanism is genuinely unlike foam: the walls stand up under light spread-out load and buckle under concentrated load. So the surface stays firm under your back and collapses under your shoulder and hip. Foam cannot do that — foam squashes proportionally everywhere.

• Airflow is structural here, not an additive. This is the one cooling claim in the category with a clear mechanism behind it.
• Recovery is instant, so there is no stuck feeling.
• It transfers more motion than foam and gives weaker edge support.
• The feel divides people. It is not a traditional mattress feel.

The caveat for India: there is no independent long-term durability data for the local versions, and the grid always sits on ordinary foam. A grid mattress can still dip in a layer you never see.

The felt insulator — the layer that decides durability

In any well-built spring mattress there is a sheet of needle-punched felt sitting directly on the coils. It never appears in marketing and it does more for the mattress's life than most things that do.

Its job is to stop the soft foam above from sinking down into the gaps between springs. Without it, foam slowly pockets around each coil. You get an uneven surface, early body impressions and poor support. It also steadies the whole cross-section and quietens the springs.

It is made by punching thousands of needles through a web of loose polyester or recycled textile fibre, which locks the fibres into a dense sheet that resists pocketing. Coir felt does the same job. Leaving it out is one of the cheapest ways to build a spring mattress badly.

The fibre quilt — the layer that flattens first

The soft loft quilted into the cover, above the top foam. It provides the initial plush hand-feel before you reach anything structural.

The spec to want is hollow conjugated siliconized fibre. The hollow core gives loft for its weight, the spiral crimp is built into the fibre rather than pressed onto it so it springs back instead of flattening, and the silicone finish stops fibres migrating around inside the layer.

This layer is the reason for one of the most common complaints in the category: a mattress that "lost its plushness in six months" while the support underneath is completely fine.

The cover

The cover is the gate every bit of heat and sweat has to pass through. A cover that does not breathe undoes every cooling feature beneath it.

• Knit polyester blends dominate because they stretch over the comfort layers. A stiff woven cover can measurably firm up a soft mattress.
• Cotton ticking is the traditional case fabric, and the one named in the Indian standard. Breathable and durable, with no stretch.
• Tencel absorbs and releases moisture faster than cotton, so it keeps a drier surface. In controlled comparisons reported by trade sources it beats bamboo viscose for wicking.
• Bamboo viscose is soft with good moisture handling, but has real durability limits.
• Phase change material absorbs heat by melting at skin temperature. Like gel, it has finite capacity — it buffers the early part of the night rather than cooling all of it.

Glue, and the fire barrier India does not have

Adhesives bond the layers and never appear on a spec sheet. They are a real source of that new-mattress smell, alongside the foam chemistry itself. Trade sources report the smell peaking in the first one to three days and largely clearing within a week.

Fire barriers are a thin layer between the comfort layers and the cover, required in the United States by an open-flame standard. They are made of wool, treated rayon or a fibreglass sock.

India has no equivalent requirement. IS 13489, the standard for bed mattresses, covers materials, dimensions, manufacture and marking, and contains no flammability clause at all. That is why the fibreglass problem that periodically makes news abroad is largely not an Indian one. There is usually no barrier to shed, because none is required.

Here is what is really inside the six builds you will meet, what each layer is doing, and which layer gives out first. Prices are indicative queen bands.

1. Budget compressed roll — ₹4,000 to ₹9,000

Cover and quilting foam, then 25–40 mm of soft PU, then 100–150 mm of rebonded foam as the core.

What gives first: the quilting flattens within months. The soft PU compresses under the hips by year two if it is under 28 kg/m³. The rebonded core usually outlives everything above it, which is why these mattresses go hard and lumpy rather than soft and saggy.

2. Ortho coir sandwich — ₹5,000 to ₹15,000

Cover and quilting, 25–40 mm of PU to make the coir sleepable, 50–100 mm of rubberized coir as the core, then more PU underneath.

What gives first: the coir compacts and the whole mattress gets thinner and harder. In coastal humidity the coir core is also the moisture reservoir. Ask for the IS 8391 grade before you buy.

3. Memory foam over foam — ₹8,000 to ₹25,000

Knit cover, 25–50 mm of memory foam, sometimes a 25 mm transition layer, then 125–175 mm of HD or HR foam.

What gives first: if the transition layer is missing — common at this price — the memory foam carries the whole load and softens for good under the hips. Ask for two densities: the memory foam's and the core's.

4. Latex over coir over foam — ₹15,000 to ₹35,000

Cover, 25 mm of latex, 50 mm of coir, then 100–150 mm of HR or bonded foam.

Why it works: each material is used only for what it is best at. Latex for surface feel and heat, coir for firm airflow, foam for cheap bulk support. It is also the build where the name on the box tells you least about the contents.

This is what "latex mattress" nearly always means here. A true all-latex build uses latex for every layer and starts near ₹50,000. The latex on top sets the feel. What sits under it sets the price and the lifespan.

5. Pocket spring hybrid — ₹12,000 to ₹35,000 and up

Cover and fibre quilt, 25–50 mm of memory foam or latex, a felt insulator pad, then 150–200 mm of pocket springs with a foam rail around the edge.

What gives first: the foam edge rail, usually before the coils do, and faster in a warm room. Then the edges go.

6. Polymer grid over foam — ₹15,000 to ₹50,000 and up

Stretch cover, 25–50 mm of grid, transition foam, then a foam core or pocket springs.

What gives first: not the grid. The variable is the ordinary foam underneath it. A grid mattress with an undisclosed core is a premium top layer on an unknown base.

Every material wears out in its own specific way. Knowing the pattern tells you whether what you are feeling is normal ageing or a warranty claim.

Four local conditions make imported material advice partly wrong here.

• Bedrooms without AC. Sleep research holds that people do not adapt to a hot sleeping surface. Above roughly 24°C, heat-sink cooling — gel, phase change material — has nowhere to dump what it absorbs. Only structural airflow works all night.
• Monsoon humidity of 80 to 95%. Coir, cotton and kapok pull that water into the core, where it feeds mould and mites. Latex, PU and polyester do not absorb it — but they do not release it either, so a plastic-backed protector on a foam mattress traps sweat at the surface instead.
• Box beds with solid tops. The most under-discussed variable in Indian bedrooms. A solid storage-bed top gives the mattress no underside ventilation at all. No material choice fully fixes that.
• The sun-drying reflex. Correct for cotton and kapok. Fine, briefly, for coir. Harmful for latex, where UV and moisture both speed up oxidation. Not useful for PU foam either.

The practical shortlist that follows: if your room runs hot and you have no AC, favour a pocket-spring hybrid, latex or coir over plain memory foam. The buying guide works through the rest of the decision.

Four BIS standards govern what goes inside a mattress sold here. They are public, and they contain numbers no showroom will volunteer.

IS 13489 — the umbrella standard

IS 13489: 2000 covers bed mattresses made from rubberized coir, flexible polyurethane or latex foam, or a combination. It names the component standards for each: coir to IS 8391, latex to IS 1741, PU foam to IS 7933, and cotton bed ticking to IS 175.

Two clauses in it are quietly consumer-protective, and worth knowing by heart:

• Clause 5.2 — where more than one cushioning material is used, "the order of layering of cushion materials shall also be indicated".
• Clause 7.1 — the marking shall carry the type of cushioning material, and where more than one is used, "thickness and grade of each shall be indicated separately".

Brands do the first half of this well. A cutaway diagram showing the order of layering is close to universal on Indian mattress listings now — 55 of the 56 Amazon.in listings we captured describe their layers.

It is the grade that goes missing. Across those same 56 listings, the word "density" appeared 39 times and a density figure appeared zero times. Not one cited an IS grade for its coir. The only numbers we found describing a material at all were cover weights in GSM.

So the useful question is not "what is in it" — the diagram answers that. It is "what grade is each layer", which the standard says should be marked and which the listing will not tell you.

IS 8391 — rubberized coir

IS 8391 (Part 1): 2019 sets grades, densities, ageing and flexing limits, compression set, pH, chloride and sulphate caps, and an Ecomark route. The grade table is in the coir section above.

IS 7933 — polyurethane foam

Density of at least 27 kg/m³, support factor of at least 1.9:1, compression set no more than 10%, and fatigue limits of 30% hardness loss and 10% thickness loss. Cells must be essentially open. Multi-layer and profiled cores are explicitly allowed. Note the date: this standard is from 1975.

IS 1741 — latex foam

IS 1741 is the latex counterpart, revised in 2019.

The voluntary certifications, and what each one misses

A logo on a listing proves nothing. Three of the four run a public database, so check the certificate number rather than the picture. GOLS has no open lookup, so ask the seller for the certificate itself. Which brands' claims check out is covered in the brands fact sheet.

Eight questions. Any brand that can answer all eight is worth buying from. Any brand that cannot answer the first three has told you something.

Sizes and frame fit are a separate problem, and the size chart handles it.

Every number on this page comes from one of three places: the published text of an Indian Standard, a certifier's own rules, or our own count of Amazon.in listings. The primary documents are all public, and they are linked here so you can read the clause rather than take our word for it.

Indian Standards

These are the four BIS standards covered in the Indian standards section above. Every clause number we quote was read from these texts.

• IS 13489: 2000 — Textiles: Bed Mattress. Full text (PDF)
• IS 8391 (Part 1): 2019 — Rubberized coir sheets for cushioning, curled. Full text
• IS 7933: 1975 — Flexible polyurethane foam for domestic mattresses. Full text (PDF)
• IS 1741: 2019 — Latex foam rubber products. Full text

None of these is mandatory for a mattress sold in India. They set what a grade means, not what a maker must do.

Certification bodies

Each of these publishes its own rules. Three of the four also run a database you can search.

• CertiPUR-US — PU foam emissions and content. Programme · Supplier directory
• OEKO-TEX Standard 100 — harmful substances in finished textiles. Standard · Label Check
• GOTS — organic fibre content, run by Global Standard gGmbH. Standard · Certified suppliers
• GOLS — organic latex, run by Control Union. Programme
• eco-INSTITUT — German emissions testing, common on premium latex. Label · Mattress testing scope

Our own listing audit

Three counts on this page are our own: 55 of 56 listings describe their layers, 39 use the word "density", and none gives a density figure. We read the 56 Amazon.in mattress listings behind the mattress finder dataset and counted what each one published. Counted August 2026. Listings change, so we re-count before republishing.

Everything else

Where a figure is not from a standard or a certifier, the page says so in the sentence itself. Look for the phrasing:

• "Per Sleep Foundation" and similar — an expert consumer-research outlet, linked at that point in the text.
• "Trade sources report" — specialist mattress and foam trade publications, which agree with each other but are not standards.
• "Owners report" — verified customer reviews we analysed.

We do not physically test mattresses, and nothing on this page is presented as our own measurement. How we work is set out in our methodology.