What certifications should I look for in a non-toxic mattress?

A handful of seals do most of the useful work, and it helps to know which part of the mattress each one covers. For the foam inside a mattress, CertiPUR-US is the common one in the United States, testing that the polyurethane foam is made without certain flame retardants, formaldehyde, and heavy metals and that it meets a low limit for emissions. For low chemical emissions from the finished product, GREENGUARD Gold is the seal to look for, since it certifies that the mattress off-gasses below strict limits for volatile organic compounds. For organic materials, GOTS covers organic cotton and other textiles while GOLS covers organic latex, and the two are separate for a reason. OEKO-TEX Standard 100 sits across many of these, confirming that the tested components are free of a long list of harmful substances above set limits. No single seal covers everything, so a genuinely well-certified mattress usually carries two or three that together address foam, emissions, and organic content, which is what we weigh in our guide to the best non-toxic mattress.

What does CertiPUR-US actually certify?

CertiPUR-US is a certification for the flexible polyurethane foam used inside many mattresses, not for the whole mattress or for how organic anything is. To carry it, the foam must be made without ozone-depleting chemicals, without the phased-out PBDE flame retardants and certain other regulated flame retardants, without mercury, lead, and other heavy metals, and without formaldehyde and specified phthalates, and it must meet a low ceiling for volatile organic compound emissions. That is a meaningful set of assurances for anyone whose main worry is what is in the foam and how much it off-gasses. What it is not is proof that a mattress is natural, organic, or free of all synthetic material, since the foam is still petroleum-based polyurethane that happens to meet these limits. It answers whether this foam is made without the worst-known additives, which is worth knowing, rather than whether the mattress is made of natural materials.

What is the difference between GOTS and GOLS?

They are both genuine organic certifications, but they cover different materials, which is why a serious organic mattress often lists both. GOTS, the Global Organic Textile Standard, applies to textiles made from organic fibres such as cotton and wool, and it certifies not only that the fibre is grown organically but that the whole processing chain meets environmental and social criteria, with tight limits on the chemicals allowed in dyeing and finishing. GOLS, the Global Organic Latex Standard, applies specifically to latex made from organic rubber-tree sap, setting limits on the substances in the finished latex and requiring a high percentage of certified organic material. So on a natural latex mattress, GOLS speaks to the latex core while GOTS speaks to the organic cotton cover and any wool. Seeing both is a good sign that the organic claim runs through the whole mattress rather than resting on a single component.

What does OEKO-TEX Standard 100 mean on a mattress?

OEKO-TEX Standard 100 is a testing and certification system confirming that every certified component of a product has been tested for a long list of potentially harmful substances and stays below defined limits. On a mattress it typically applies to the textiles and sometimes other components, checking for things such as certain formaldehyde levels, regulated flame retardants, heavy metals, pesticides, and specific dyes and phthalates. Its strength is breadth: the list of tested substances is extensive and updated regularly, and the limits are often stricter than the law requires. Its limit is that it is about the absence of harmful substances above thresholds rather than about organic origin, so an OEKO-TEX Standard 100 material can be conventional rather than organic, it just has to test clean. It is best read as a tested-for-harmful-substances assurance, which pairs naturally with an organic seal like GOTS that speaks to how the material was grown.

Is GREENGUARD Gold worth looking for?

For the specific question of off-gassing, it is one of the more useful seals, because it targets exactly what worries most people about a new mattress, the chemical smell and the volatile organic compounds released into bedroom air. GREENGUARD Gold, administered by UL, certifies that a product meets strict limits for chemical emissions, and the Gold level uses tighter thresholds set with sensitive people such as children and the elderly in mind. That makes it directly relevant to a mattress, a large item you breathe next to for hours every night in an enclosed room. The caveat is the same as with the others: it certifies low emissions, not natural or organic materials, so a foam mattress can be GREENGUARD Gold while still being synthetic. If your priority is a low-off-gassing bed and clean bedroom air, it is a seal worth prioritizing, ideally alongside CertiPUR-US for the foam itself.

Do mattress certifications guarantee it is non-toxic?

They raise the odds considerably, but no single certification is a blanket guarantee, and treating one seal as a complete answer is where shoppers get misled. Each certification covers a defined scope: CertiPUR-US the foam, GREENGUARD Gold the emissions, GOTS the organic textiles, GOLS the organic latex, OEKO-TEX the absence of listed harmful substances. A mattress can carry one of these and still contain materials that fall outside that particular seal, which is why marketing that waves a single logo deserves a second look at what exactly is certified. The reassuring version is a mattress that stacks complementary certifications so the foam or latex, the cover, and the finished emissions are each covered. It is also worth remembering that non-toxic is not itself a regulated term, so the certifications are the closest thing to verifiable evidence, and a bed that names several specific, independent seals is far more trustworthy than one that simply calls itself non-toxic.

The Explainer· Home

Mattress certifications explained

A plain mattress on a simple wooden bed frame with white bedding in a bright, calm bedroom in soft natural light.

By The PlasticFreeLab TeamUpdated July 19, 20269 min read

Non-toxic mattress marketing leans heavily on certifications, but the seals mean very different things, and some cover the foam while others cover the cotton or the whole finished mattress. Here is what CertiPUR-US, GOTS, GOLS, OEKO-TEX, and GREENGUARD Gold each actually test for, which matter for off-gassing and which for organic claims, and where a certification stops short of proof.

The FAQ

What people ask us next.

What certifications should I look for in a non-toxic mattress?: A handful of seals do most of the useful work, and it helps to know which part of the mattress each one covers. For the foam inside a mattress, CertiPUR-US is the common one in the United States, testing that the polyurethane foam is made without certain flame retardants, formaldehyde, and heavy metals and that it meets a low limit for emissions. For low chemical emissions from the finished product, GREENGUARD Gold is the seal to look for, since it certifies that the mattress off-gasses below strict limits for volatile organic compounds. For organic materials, GOTS covers organic cotton and other textiles while GOLS covers organic latex, and the two are separate for a reason. OEKO-TEX Standard 100 sits across many of these, confirming that the tested components are free of a long list of harmful substances above set limits. No single seal covers everything, so a genuinely well-certified mattress usually carries two or three that together address foam, emissions, and organic content, which is what we weigh in our guide to the best non-toxic mattress.
What does CertiPUR-US actually certify?: CertiPUR-US is a certification for the flexible polyurethane foam used inside many mattresses, not for the whole mattress or for how organic anything is. To carry it, the foam must be made without ozone-depleting chemicals, without the phased-out PBDE flame retardants and certain other regulated flame retardants, without mercury, lead, and other heavy metals, and without formaldehyde and specified phthalates, and it must meet a low ceiling for volatile organic compound emissions. That is a meaningful set of assurances for anyone whose main worry is what is in the foam and how much it off-gasses. What it is not is proof that a mattress is natural, organic, or free of all synthetic material, since the foam is still petroleum-based polyurethane that happens to meet these limits. It answers whether this foam is made without the worst-known additives, which is worth knowing, rather than whether the mattress is made of natural materials.
What is the difference between GOTS and GOLS?: They are both genuine organic certifications, but they cover different materials, which is why a serious organic mattress often lists both. GOTS, the Global Organic Textile Standard, applies to textiles made from organic fibres such as cotton and wool, and it certifies not only that the fibre is grown organically but that the whole processing chain meets environmental and social criteria, with tight limits on the chemicals allowed in dyeing and finishing. GOLS, the Global Organic Latex Standard, applies specifically to latex made from organic rubber-tree sap, setting limits on the substances in the finished latex and requiring a high percentage of certified organic material. So on a natural latex mattress, GOLS speaks to the latex core while GOTS speaks to the organic cotton cover and any wool. Seeing both is a good sign that the organic claim runs through the whole mattress rather than resting on a single component.
What does OEKO-TEX Standard 100 mean on a mattress?: OEKO-TEX Standard 100 is a testing and certification system confirming that every certified component of a product has been tested for a long list of potentially harmful substances and stays below defined limits. On a mattress it typically applies to the textiles and sometimes other components, checking for things such as certain formaldehyde levels, regulated flame retardants, heavy metals, pesticides, and specific dyes and phthalates. Its strength is breadth: the list of tested substances is extensive and updated regularly, and the limits are often stricter than the law requires. Its limit is that it is about the absence of harmful substances above thresholds rather than about organic origin, so an OEKO-TEX Standard 100 material can be conventional rather than organic, it just has to test clean. It is best read as a tested-for-harmful-substances assurance, which pairs naturally with an organic seal like GOTS that speaks to how the material was grown.
Is GREENGUARD Gold worth looking for?: For the specific question of off-gassing, it is one of the more useful seals, because it targets exactly what worries most people about a new mattress, the chemical smell and the volatile organic compounds released into bedroom air. GREENGUARD Gold, administered by UL, certifies that a product meets strict limits for chemical emissions, and the Gold level uses tighter thresholds set with sensitive people such as children and the elderly in mind. That makes it directly relevant to a mattress, a large item you breathe next to for hours every night in an enclosed room. The caveat is the same as with the others: it certifies low emissions, not natural or organic materials, so a foam mattress can be GREENGUARD Gold while still being synthetic. If your priority is a low-off-gassing bed and clean bedroom air, it is a seal worth prioritizing, ideally alongside CertiPUR-US for the foam itself.
Do mattress certifications guarantee it is non-toxic?: They raise the odds considerably, but no single certification is a blanket guarantee, and treating one seal as a complete answer is where shoppers get misled. Each certification covers a defined scope: CertiPUR-US the foam, GREENGUARD Gold the emissions, GOTS the organic textiles, GOLS the organic latex, OEKO-TEX the absence of listed harmful substances. A mattress can carry one of these and still contain materials that fall outside that particular seal, which is why marketing that waves a single logo deserves a second look at what exactly is certified. The reassuring version is a mattress that stacks complementary certifications so the foam or latex, the cover, and the finished emissions are each covered. It is also worth remembering that non-toxic is not itself a regulated term, so the certifications are the closest thing to verifiable evidence, and a bed that names several specific, independent seals is far more trustworthy than one that simply calls itself non-toxic.

References

Sources we cited on this page.

About the byline

The PlasticFreeLab Team

A small group of researchers and writers cutting through the noise around non-toxic living. We read the studies, read the labels, test the products. We update our recommendations as the science evolves. We do not accept payment for product placement, we disclose every affiliate relationship, and we name the brands we reject.

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Mattress certifications explained

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