Some mattresses do contain fiberglass. Avocado mattresses never do. Every Avocado mattress uses certified organic wool as a natural flame barrier, except for our Vegan Mattress, which uses charcoal-infused latex. Both are certified under GOTS, which explicitly prohibits fiberglass in finished certified products.
Why Do Some Mattresses Use Fiberglass?
To meet federally mandated flammability standards, some manufacturers use fiberglass as an inexpensive fire retardant, particularly in memory foam mattresses and mattress covers. The problem is that fiberglass poses serious health and safety risks if it is ever released from the mattress, which can happen when a cover is torn, ripped, or removed and washed.
Health Risks of Fiberglass in Mattresses
Respiratory problems. Fiberglass is made from extremely fine glass fibers. When those fibers become airborne and are inhaled, they can irritate the lungs, causing coughing, wheezing, and shortness of breath. Prolonged or severe exposure has been linked to lung disease and cancer.
Skin irritation and rashes. Fiberglass fibers can penetrate the skin on contact, causing itching, burning, and redness. Repeated exposure can lead to more serious conditions, including eczema and contact dermatitis.
Harmful emissions when burned. When fiberglass-containing mattresses burn, they can release toxic fumes, including formaldehyde and other carcinogens. These fumes can cause respiratory problems, headaches, and eye irritation.
How Avocado Eliminates Fiberglass
Avocado uses certified organic wool as a natural flame barrier across every mattress. Organic wool is naturally fire-resistant, meets federal flammability standards without chemical treatments, and produces no toxic fumes. It is the same material that regulates temperature and wicks moisture in your sleep surface.
This is verified, not self-reported. Every Avocado mattress is certified under GOTS, which prohibits fiberglass in finished certified products, and independently screened under five additional finished-product certifications:
Certification | What It Verifies |
Organic integrity from farm through finished product; prohibits fiberglass | |
Harmful substances; highest tier, for babies and toddlers | |
Screening against thousands of substances harmful to human health and ecosystems | |
Full ingredient transparency and health-based screening | |
Airborne chemical emissions in bedrooms and children's rooms | |
No added formaldehyde or formaldehyde precursors |
No single certification catches everything. Six simultaneous finished-product certifications leave fewer gaps unchecked.
How to Check Whether a Mattress Contains Fiberglass
Most manufacturers that use fiberglass do not disclose it prominently. Look for warning labels that say "do not remove cover" — a common signal that fiberglass is present and the manufacturer does not want it disturbed. If a brand cannot point to a finished-product certification that independently prohibits fiberglass, the safest assumption is that it may be present.
The most reliable protection is a GOTS-certified organic mattress, where fiberglass is prohibited by the certification standard itself, verified by an independent third party, and not simply self-reported.
View all of our certifications at avocadogreenmattress.com/pages/certifications.