What Is Non-Toxic Activewear?

Common Chemicals to Avoid in Non-Toxic Activewear

PFAS (Water, Stain, and Oil resistance)

When shopping for non-toxic activewear, one of the primary concerns is the presence of PFAS (per- and polyfluoroalkyl substances). Often referred to as ‘forever chemicals’ because they don’t easily break down, these substances are frequently added to workout clothing to make the fabric repel water and stains.

The National Institute of Environmental Health Sciences (NIEHS) notes that PFAS are highly persistent in both the environment and human body, and research links long-term exposure to a variety of immune, liver, thyroid, reproductive, developmental, and cancer-related concerns. 

BPA (Sports Bras, Athletic Shirts, Shorts)

BPA is another chemical that frequently appears in athletic clothing, particularly in clothing made from spandex and polyester to help set the dye and improve the fabric’s lifespan. The Center for Environmental Health (CEH) recently found high levels of BPA in several popular brands of sports bras and athletic shirts, with several exceeding California's Prop 65 safe-harbor limits. Because BPA can be absorbed directly through the skin, wearing tight, sweat-soaked clothing containing this chemical raises significant exposure concerns.

Endocrine-Disrupting Chemicals

Many of the synthetic finishes applied to workout gear fall under the broader category of endocrine disruptors. These are substances that can mimic, block, or interfere with your body’s natural hormone production. When you exercise, your pores open up and your skin becomes much more permeable. This means that even very low-dose exposures to these materials during a prolonged workout or yoga session can have an impact on your health.

Antimicrobial and Odor-Control Finishes

To prevent gym clothes from smelling over time, many conventional brands treat their fabrics with heavy antimicrobial and odor-control finishes. While these treatments might keep the garments smelling fresh, they often rely on harsh chemical agents or heavy metals like silver nanoparticles. When these treatments sit directly against warm, sweating skin, there’s a risk that the chemical agents can transfer to your body, potentially disrupting your skin's natural, healthy microbiome in the pursuit of odor control.

Synthetic Microfiber Shedding

Beyond chemical additives, the physical structure of conventional activewear presents an entirely different environmental issue. Materials like polyester, nylon, and acrylic are essentially plastic-based fabrics. Every time you run them through the washing machine, they shed tiny pieces of plastic known as microfibers. These microscopic particles easily bypass standard water filtration systems and enter the global water supply, making conventional activewear a leading source of secondary microplastic pollution.

Materials That Make Activewear Cleaner

When choosing non-toxic activewear, the materials used should be one of the most important factors in your decision. 

Organic Cotton

Organic cotton is one of the best materials for non-toxic activewear because it is breathable, soft, and grown without synthetic pesticides or chemical fertilizers. Because it is grown under strict agricultural standards, it completely avoids the use of synthetic pesticides, chemical fertilizers, and genetically modified organisms. For the wearer, this means the fabric is highly breathable, soft, and gentle against the skin, without carrying the hidden chemical residue found in conventional farming.

Recycled Polyester

Recycled polyester can be a lower-impact alternative to virgin polyester because it reduces demand for new plastic production while keeping existing materials out of landfills. While recycled blends offer necessary durability and stretch for activewear, they should be chosen thoughtfully and washed with care.

Lower-Impact Dyes

The dyeing process is often one of the most chemically intensive stages of clothing production. Opting for garments colored with lower-impact dyes ensures that fewer heavy metals and toxic byproducts touch your skin or enter the waterways. Always look for clear, transparent material labeling from brands rather than trusting vague marketing phrases like ‘chemical-free.’

Key Features of Genuinely Non-Toxic Activewear

Look for these features when shopping for non-toxic activewear to help identify safer, lower-toxin workout clothing:

• Organic or lower-impact fibers as the primary material
• PFAS-free construction, using water or stain resistance only when genuinely needed
• BPA-conscious manufacturing, especially for sports bras and tight synthetic pieces
• Safer, low-impact dyes
• No unnecessary antimicrobial, anti-odor, or insect-repellent treatments
• Durable construction designed to last
• Qualified claims backed by transparent labeling

How Regulations Are Pushing Toxins Out of Activewear

Several U.S. states are introducing regulations that restrict chemicals such as PFAS in clothing and textile products. 

States are beginning to strictly target the use of forever chemicals in everyday clothing. California, for instance, introduced AB 1817 to explicitly restrict the inclusion of PFAS in textile articles. Colorado’s SB24-081 places firm restrictions and mandates clear disclosures for PFAS in certain outdoor apparel. Washington has also integrated clothing into its Safer Products program to prevent manufacturers from adding these chemicals. This legislative wave is a hopeful turning point for fashion.

Detox Your Closet With Our Organic Cotton Collection

Your physical practice is a fundamental part of your mindful lifestyle. The clothing you wear during a workout or meditation should naturally support your health rather than introduce unnecessary chemical risks. At GFL, we design our apparel with this very standard in mind.

We invite you to choose cleaner, more breathable, organic cotton pieces that move effortlessly with your body. By integrating mindfully crafted clothing into your routine, you ensure your daily movement stays grounded in safety and respect for the environment. Explore our Organic Cotton Collection today.