Quick answer: Kevlar® is a brand of para-aramid fiber. Aramid fibers can be used in some mattress flame-barrier constructions, but a mattress described as “aramid” does not necessarily contain Kevlar. Ask the manufacturer about the specific model, production date and complete barrier composition.
What is Kevlar, and why might it appear in a mattress?
DuPont describes Kevlar as a strong synthetic para-aramid fiber. Aramid fibers have heat-resistant properties and can be used with other materials in protective fabrics. In a mattress, a fire barrier may sit beneath the outer fabric and above other components. Its materials and design vary by model.
For example, Original Mattress Factory describes using para-aramid and flame-resistant rayon in barriers, and identifies Kevlar as a type of para-aramid. That description alone does not prove a particular product uses the Kevlar brand; confirm with the manufacturer.
What does a mattress flame barrier do?
A barrier is one part of a mattress construction designed to meet applicable flammability requirements. The material can be a fabric or other layer, and its composition varies. A model may use a blend; the name of one fiber does not tell you the entire mattress’s contents.
Do not cut, remove or expose a fire barrier. A zipper on the outer cover does not automatically mean it should be removed. Check the care label and ask the manufacturer for instructions for your exact model.
What do U.S. flammability standards require?
The Consumer Product Safety Commission explains that applicable mattress standards include smoldering and open-flame tests. The open-flame standard limits the size of the fire produced in a specified 30-minute test. Passing a test does not make a mattress fireproof, and a fiber used in protective equipment does not make a mattress bulletproof.
DuPont’s Kevlar technical guide states that the fiber is inherently flame resistant but can ignite. Performance of a finished mattress depends on the complete design, not one fiber in isolation.
What the fiber does not prove
- Health and allergies: The presence of aramid alone does not establish that the whole mattress is hypoallergenic, chemical-free or suitable for every person.
- Durability: Fiber strength does not guarantee how long the foam, springs, seams or complete mattress will last.
- Infant use: A barrier material does not establish that a sleep surface is appropriate for a baby. Use a product intended for infant sleep and follow current safe-sleep guidance.
- Fiberglass: An aramid claim does not automatically prove that the rest of the barrier or mattress is fiberglass-free. Ask about the complete construction.
Questions to ask before buying
- What is the full fire-barrier material composition for this model and manufacturing date?
- Is “Kevlar” the actual branded fiber, or is the material another para-aramid?
- Does any layer contain glass fiber? Is the cover intended to be removed?
- Which product certifications apply, and do they cover foam, fabric or the finished mattress?
- What are the care instructions, warranty terms and required foundation?
Keep the manufacturer’s response with the receipt and law tag. See our mattress flame-barrier guide for more on different materials.
Frequently asked questions
Is every aramid fiber Kevlar?
No. Kevlar is a brand of para-aramid; an aramid label alone does not identify the brand.
Is a Kevlar-containing mattress fireproof?
No. A finished mattress must be evaluated as a complete product, and passing a flammability test does not make it fireproof.
Does Kevlar make a mattress hypoallergenic?
That cannot be concluded from the fiber alone. Ask about the complete construction and seek advice about specific sensitivities.