Where does latex come from?

Natural latex comes primarily from rubber-tree sap. Liquid latex contains water as well as rubber, so it is not pure rubber.

Rubber has been identified in about 2,500 plants, but Hevea brasiliensis, the rubber tree, is the only one used commercially for production, according to Fraunhofer. Avocado says latex is tapped by hand from living trees without felling them.

Avocado says latex is tapped by hand from living trees without felling them. The sources describe some tapping conditions and steps in the Talalay process, but not a full production sequence.

• The FAO guide describes a tree at 50 cm in circumference at 1 m above ground, about five years after planting.
• Kerala Agricultural University says completing tapping and latex flow in the early hours (02:00-06:00) is good for higher yield.
• Talalay Global says its Talalay process adds vacuum and flash-freezing steps.
• Vita Talalay says its mold is filled about 30-60%, then vacuum distributes the material.

Natural and blended latex describe different material compositions. If sourcing matters, check whether the mattress lists natural latex, a blend, or the proportions.

Natural latex

Natural latex is made primarily from rubber-tree sap and may include curing agents.

• The Sleep Foundation glossary says natural latex typically contains at least 95% sap.
• Vita Talalay says processing harvested organic latex requires adding inorganic materials.
• If you want latex made entirely from rubber sap, look for assurance of that composition.

Blended latex

Blended latex usually combines natural and synthetic materials, but its exact mix varies by manufacturer.

• A typical mix is 70% synthetic materials and 30% natural rubber, according to GoodBed.
• Blended latex may be used in the support layer, comfort layer, or both.
• Ask the seller for the material proportions.

No, mattress latex is not always natural. It can be natural, synthetic, or blended, so check what the label and certifications actually cover.

• CertiPUR-US certifies flexible polyurethane foam, not latex foam or a whole mattress.
• A mattress can contain a latex layer alongside CertiPUR-US-certified polyurethane foam.
• Brentwood says a GOLS-certified product must contain more than 95% certified organic raw material.
• Brentwood says transaction certificates for every product sale support supply-chain traceability.

Dunlop and Talalay are different latex-making processes, and the descriptions here apply to particular makers or general glossary definitions. Check the specific mattress description rather than assuming every latex core is made the same way.

Dunlop latex

Latex Sense says the Dunlop process has no freezing stage and that rubber particles settle at the bottom of a Dunlop mattress.

• Vita Talalay describes standard latex production as filling the mold completely before baking or vulcanizing.
• Latex Sense says the two sides of a Dunlop latex mattress may differ slightly in feel and firmness.
• Dunlop latex may be used in a comfort system or support core.

Talalay latex

Talalay descriptions include vacuum and flash-freezing steps, though the details vary by source.

• Talalay Global says its process adds vacuum and flash-freezing steps.
• Vita Talalay says its mold is filled about 30-60%, then vacuum distributes the material.
• The Sleep Foundation glossary lists vacuum sealing, freezing, and baking in its Talalay process description.
• Talalay Global says each core and pillow undergoes a five-stage wash; this does not establish that every latex protein is removed.

Blended latex may be used in a mattress’s comfort layer, support layer, or both. A mattress may pair a natural latex comfort layer with a pocket-spring support core.

• In Avocado’s example, the top layer is contoured Dunlop latex, followed by two thicker latex layers below it.
• Check the layer description to see whether latex is part of the comfort layer, support layer, or both.

Blend proportions vary by manufacturer. For Brentwood’s GOLS claims, check the certificate and product scope.

1. Ask the seller for the natural and synthetic proportions, since blends vary by manufacturer.
2. For Brentwood, view its GOLS certificate and check its listed product scope.
3. For Brentwood’s GOLS claims, confirm which listed products use GOLS-certified latex.
4. If latex content is a concern, ask the mattress manufacturer whether the specific model contains latex.
5. If your priority is entirely rubber-sap latex, look for assurance that the latex is made entirely from rubber sap.

Talalay Global says its cores and pillows undergo a five-stage wash, but that alone does not establish that every latex protein is removed. Talalay Global says its bedding-grade latex is washed and cured to remove proteins associated with medical-grade latex allergies; that is the manufacturer’s claim.

Does natural latex mean the whole mattress is natural?

No. Natural latex does not mean every mattress component is natural: a latex mattress may pair a latex comfort layer with a pocket-spring support core.

Does washing latex foam remove every latex protein?

Talalay Global says its bedding-grade latex undergoes intense washing and curing to remove proteins associated with medical-grade latex allergies. This is the manufacturer’s claim, not evidence that washing removes every protein.

What does blended latex mean?

Blended latex usually combines natural and synthetic material. A typical mix is 70% synthetic and 30% natural rubber, but the proportions vary by manufacturer.

We read 15 published pages from 13 sites (Sleep Foundation, tis-gdv.de, goodbed.com, cbp.fraunhofer.de and 9 more), checked in October 2026. Every sentence in the answers above cites one of them; the offer card at the end names its own source. This page reports published sources only; we did not test mattresses in person.