Merino Short - 5"
Shop Now
Shop nowThe Acrylonitrile Alert: Why Your 'Soft-Touch' Synthetic Activewear is a Dermal Toxicity Risk
For the health-conscious athlete, the checklist for a "clean" lifestyle is growing. You’ve likely swapped your plastic tupperware for glass and filtered the PFAS out of your drinking water. But there is a hidden frontier of toxicity that many in the low-tox community are just beginning to uncover: the very clothes pressed against your skin during your most intense workouts.
While the industry has focused heavily on BPA in polyester and "forever chemicals" (PFAS) in waterproof gear, a new concern is emerging regarding acrylonitrile in clothing. Often found in "soft-touch" synthetic blends and acrylic-based performance wear, this chemical is more than just a manufacturing byproduct—it is a potential dermal toxicity risk that thrives in the high-heat environment of a gym or a summer run.
What is Acrylonitrile and Why is it in Your Gym Bag?
Acrylonitrile is a volatile liquid used primarily as a monomer in the production of high-performance polymers, including acrylic fibers and certain synthetic rubbers. In the world of "fast fashion" activewear, acrylic is often blended with polyester or spandex to create a "brushed" or "soft-touch" feel that mimics the fluffiness of wool without the cost.
However, the question remains: is acrylic fabric toxic? While the final plastic polymer is technically "stable," trace amounts of unreacted acrylonitrile can remain trapped within the fibers. As a classified Group 2B carcinogen (possibly carcinogenic to humans), the presence of this chemical in garments intended for skin-tight contact is a growing concern for those seeking low tox activewear.
The Science of Dermal Absorption: Heat, Sweat, and Pores
The danger of carcinogens in activewear isn't just their presence; it’s the environment in which we use them. During a high-heat workout, your body performs two specific functions that increase your chemical exposure:
- Vasodilation: To cool down, your blood vessels dilate and your pores open wide.
- Sweat as a Solvent: Moisture acts as a carrier, potentially leaching residual chemicals from synthetic fibers and transporting them directly into your bloodstream through your open pores.
When you wear synthetic "performance" fabrics, you are essentially creating a warm, moist "transdermal patch" of industrial chemicals. This makes the search for truly non-toxic base layers a matter of biological priority, not just a fashion preference.
The Bio-Safe Alternative: Why Merino Wool Wins
At Estroni, our mission is to lead by example. We believe that chemicals and plastics are slowly degrading human health and the environment. As we explain in our About page, we aim to restore the health of individuals by moving away from the polyester-dominated status quo.
Unlike synthetic blends that require a cocktail of chemicals to achieve softness, Merino wool is naturally soft at a microscopic level. The secret lies in the fiber diameter. By selecting specific Microns, Softness & Itchiness levels, we create a fabric that feels like a second skin without the need for acrylonitrile or chemical finishes. Merino is a "living" fiber that breathes with you, managing moisture without the toxic off-gassing associated with plastic-based textiles.
Making the Switch to Low-Tox Performance
Choosing your gear should be simple. When you move away from synthetic "soft-touch" fabrics, you aren't just choosing a better shirt; you are reducing your daily toxic load. Estroni Merino provides the performance insulation and moisture management you need, derived entirely from nature.
We are committed to every step of the process, from the fiber to our Natural-Fiber Activewear: Our Impact | Sustainable, Plastic-Free Packaging. When you order from us, your items are dispatched quickly from our Sydney warehouse, with free shipping on orders over $150. And don’t worry about the guesswork—simply choose your usual sizes, and we will handle the rest.
Conclusion
Your skin is your body’s largest organ. It absorbs what you put on it—whether that’s a luxury lotion or the residual acrylonitrile in your leggings. By choosing natural, bio-safe fibers like Merino, you protect your hormonal health and your long-term wellness, ensuring that your workout is actually working for your body, not against it.
