For decades, the allure of staying dry and comfortable on the slopes has come at a hidden cost to our environment and health. Per- and poly-fluoroalkyl chemicals (PFAS), a broad class of synthetic compounds, have been a ubiquitous component in outdoor gear, particularly in ski waxes, snow boots, and performance outerwear designed for activities like skiing and snowboarding. These chemicals, often applied as a "durable water-repellent" (DWR) finish, are responsible for the characteristic beading and shedding of water from fabrics. However, their persistence and pervasive nature have raised significant alarms, leading to concerns about their impact on ecosystems and human well-being.

PFAS chemicals are often referred to as "forever chemicals" because they do not break down naturally in the environment. Once released, they can persist for thousands of years. This persistence means that every time outdoor gear is used, washed, or disposed of, these chemicals can flake off into our homes, wash into our water systems, contaminate snowpack in even the most remote wilderness areas, accumulate in wildlife, and ultimately find their way into human bodies. Scientific investigations have documented the presence of PFAS in the blood of Indigenous communities in remote Canadian regions and in the snowpack of Mount Everest, underscoring their global reach and the widespread reliance on these chemicals in high-performance outdoor equipment.

The health implications associated with PFAS exposure are a growing area of scientific concern. Research has linked these "forever chemicals" to a range of adverse health outcomes, including various types of cancer, reproductive issues such as miscarriage and infertility, disruptions to the endocrine system, and even significant weight fluctuations. The pervasive nature of PFAS means that many individuals are likely to have some level of these chemicals present in their bodies.

Understanding the terminology surrounding PFAS is crucial for consumers seeking to make informed choices. The industry has historically used the term "PFC" (perfluorinated chemicals) to denote the broad category of chemicals used in DWR finishes. However, PFCs are a subset of the larger PFAS family. As awareness of the issue has grown, governments, industry bodies, and advocacy groups are increasingly shifting towards the more encompassing term "PFAS-free." The U.S. Environmental Protection Agency (EPA) estimates that there are now over 12,000 known types of PFAS, a number that has more than doubled in recent estimates, highlighting the complexity and scale of the chemical landscape.

When manufacturers claim their products are "PFAS-free," "PFC-free," or "free of fluorinated chemicals," it generally indicates a commitment to avoiding these problematic substances. However, consumers should be aware of nuanced claims. Products described as "PFOA-free," "PFOS-free," "long-chain-free," or "C8-free," or those that specify the use of "short-chain" DWR treatments, may still contain certain types of PFAS. While these short-chain alternatives are sometimes presented as safer, they are not entirely without concern.

Dr. Linda Birnbaum, a distinguished toxicologist and former director of the National Institute of Environmental Health Sciences (NIEHS), has voiced concerns about these alternatives. She explains that unless a product is explicitly labeled "PFAS-free," it may still incorporate short-chain PFAS or their substitutes. Alarmingly, she notes that some of these substitutes can transform into regulated PFAS like PFOA and PFOS within the body or environment. Furthermore, testing has indicated that even these stable short-chain variants can elicit similar adverse health effects as their longer-chain counterparts.

Despite these concerns, some major outdoor brands, including Patagonia and Arc’teryx, have cited the perceived lack of efficacy in non-toxic alternatives as a reason for continued use of certain PFAS. Consequently, chemical consultancies like bluesign and certification bodies like OEKO-TEX have approved the presence of specific short-chain PFAS in the manufacturing and finishing of some water-resistant outdoor products.

However, a growing body of evidence challenges the necessity of fluorinated chemicals for achieving professional-grade performance. For the vast majority of consumers, the extreme performance requirements met by PFAS-treated gear are often unnecessary. A study conducted by the Danish consumer protection association Tænk compared fluorine-free outdoor wear with items containing fluorine. Their findings indicated that, both when new and after several washing cycles, jackets with PFC-free coatings provided equivalent levels of dryness. Furthermore, adventurers have successfully utilized fluorine-free performance gear in extreme conditions, such as the Arctic, reporting warmth and dryness. This suggests that for most recreational users, and even for many professional applications, the high level of repellency offered by PFAS is not essential.

Given the widespread availability of PFAS-free options, consumers are increasingly able to make choices that align with their environmental and health values without compromising on functionality for everyday winter sports activities. The notion that one must rely on products containing short-chain fluorinated chemistry, even for challenging expeditions, is being questioned by both consumers and a growing number of manufacturers.

Navigating the Landscape of PFAS-Free Winter Sports Apparel

The transition to PFAS-free winter sports clothing and gear requires a clear understanding of industry terminology and a discerning approach to product claims. While some brands may still use "PFC-free" as a marketing point, the more accurate and encompassing term is "PFAS-free." This signifies a commitment to avoiding the entire class of forever chemicals.

A product labeled "PFAS-free," "PFC-free," or "free of fluorinated chemicals" is generally considered a safe choice. However, it is important to scrutinize claims that mention "PFOA-free," "PFOS-free," "long-chain-free," or "C8-free." These labels often indicate that shorter-chain PFAS, which still pose health and environmental risks, may be present. As Dr. Birnbaum explained, these shorter-chain chemicals can sometimes convert into more harmful substances or exhibit similar toxicological profiles.

The argument that non-fluorinated alternatives are inherently less effective is increasingly being debunked. While it is true that PFAS-based DWR finishes have historically offered superior durability and water repellency, advancements in alternative technologies are closing this gap. The Danish study mentioned earlier found comparable performance in fluorine-free jackets after multiple washes, suggesting that the longevity issue is surmountable.

For consumers looking to maintain the water repellency of their existing gear or seeking to refresh older items, the market offers effective PFAS-free solutions. Brands like Nikwax provide DWR treatments that can be applied during the laundry process, restoring the water-shedding capabilities of jackets and other outdoor apparel. This allows consumers to extend the life of their current gear while avoiding the use of harmful chemicals. Some manufacturers, like Paramo, utilize these PFAS-free treatments in their factory finishing processes, alongside innovative fabric designs that actively channel water away from the surface.

Purchasing secondhand outdoor gear is another sustainable and environmentally conscious option. Pre-owned items often have a reduced level of their original DWR coating, making them ideal candidates for refinishing with safer, PFAS-free alternatives. This approach not only diverts items from landfills but also allows consumers to invest in high-quality gear at a lower cost while ensuring it meets current environmental standards.

Brands Leading the Charge Towards PFAS-Free Winter Sports Gear

A growing number of brands are actively embracing the shift towards PFAS-free production, offering consumers a wider range of sustainable and health-conscious choices for their winter adventures. These companies are not only phasing out harmful chemicals but are often investing in innovative materials and manufacturing processes to ensure their products meet the demands of outdoor enthusiasts.

Icebreaker: This brand, renowned for its merino wool base layers and accessories, has expanded its offerings to include a selection of women’s jackets suitable for skiing and winter hiking. Icebreaker has a long-standing commitment to avoiding long-chain PFAS and ceased using any short-chain PFAS in 2019. The company rigorously verifies its PFAS-free status through independent testing.

Jack Wolfskin: A prominent European outdoor brand, Jack Wolfskin achieved complete PFC-free status in 2019. While its availability in the U.S. has been limited, its commitment to eliminating these chemicals sets a precedent for larger outdoor companies.

KEEN Footwear: Known for its durable outdoor footwear, KEEN has been entirely PFC-free since 2018. Their range includes numerous snow boots and shoes designed for various winter conditions, ensuring that consumers can find reliable and environmentally responsible footwear.

Houdini: This Swedish brand, with a strong focus on sustainability and recycled materials, offers both downhill and cross-country skiing gear. Houdini is entirely toxic-free, utilizing the PFAS-free Atmos membrane and bio-based water repellency treatments from Organotex. Their commitment extends to ensuring all their products are free from harmful chemicals.

Paramo: A respected name in mountaineering apparel, Paramo has been PFC-free since 2014. The brand prioritizes sustainable practices and provides high-performance gear that meets stringent environmental standards.

Vaude: This European company, specializing in ski touring clothing and equipment, has been entirely PFC-free as of 2018. Vaude is committed to producing innovative and sustainable outdoor gear for a variety of activities.

Lundhags: This hiking and ski-touring company offers a range of products, including ski boots and ice safety equipment, that are completely free of fluorinated chemicals. Lundhags emphasizes durable and sustainable design in its offerings.

Picture Organic Clothing: Known for its stylish ski apparel, Picture Organic Clothing achieves its PFC-free status through a bio-based and non-fluorinated finish called EcoElite, derived from Teflon. This innovative approach ensures both performance and environmental responsibility.

Royal Robbins: This outdoor apparel brand ensures that all its durable water repellents are fluorine-free, integrating sustainability into its product design and material choices.

Erin Snow: This brand is dedicated to creating chemically safe snow sports clothing, utilizing a PFC-free Bionic-Finish Eco durable water-repellent treatment. Their focus is on providing high-performance gear with minimal environmental impact.

Patagonia: After a period of transition, Patagonia announced that as of spring 2025, all of its new products featuring durable water repellency will be PFAS-free. This significant commitment from a major player in the outdoor industry signals a strong market shift and encourages further innovation in sustainable alternatives.

The increasing number of brands actively phasing out PFAS demonstrates a growing recognition of the environmental and health risks associated with these chemicals. As consumers become more informed and demand greater transparency, the market for truly sustainable outdoor gear is poised for continued growth, offering a pathway to enjoy winter sports responsibly.