Not to sound like Richard Simmons, but you are ready to get sweaty and sustainable? Okay, that last part is all us, because nothing motivates us to go to the gym more than ethical activewear.

If you’re trying to set a PB in running away from fast fashion, it might concern you to know that most activewear—including sustainable sportswear—is made from some form of plastic (i.e. synthetic materials).

It’s necessary for that sweat-wicking, stretch power our fitness routines require—but unless it’s recycled plastic, it’s making it tough for Mother Earth to stay fit herself.

Speaking of, we’ve been stretching ourselves in new directions lately developing a new Brand Rating System that we’ll use as we refresh this article based on a whole new set of brand criteria, ranging from product performance and materials to climate commitments and more. Learn about what’s to come here.

So, let’s dive in and get the (medicine) ball rolling with our top sustainable sportswear brands.

We independently research all featured brands and we ask them to confirm their claims. In many cases we personally review recommended products. This post contains affiliate links which means we may earn a commission if you buy something. Learn more here.

The Best Ethical Activewear Brands Setting The Bar High

For the best recycled activewear on the block, Girlfriend Collective offers sizes up to 6XL, which means every kind of body can enjoy an active lifestyle and help protect the planet. They’re one of our go-to brands for seriously soft yoga clothes that we wear on and off the mat.

Iron Roots‘ activewear contains no plastics, with some of the range saving more than 60% CO2. Having tried several of their pieces, we’re impressed with the exceptional fabric quality and can highly recommend them to anyone looking for stylish and comfortable organic athletic wear.

We’ve also been sporting Pact’s GOTS-certified organic cotton activewear that’s so comfortable we wear it for relaxing in too.

Index: Sustainable Athletic Wear

  1. Patagonia Jump to section
  2. tentree Jump to section
  3. Arms Of Andes Jump to section
  4. Girlfriend Collective Jump to section
  5. Iron Roots Jump to section
  6. Pact Jump to section
  7. MATE The Label Jump to section
  8. Definite Articles Jump to section
  9. Tree Tribe Jump to section

Patagonia

Patagonia has not been rated.

About Patagonia

Price range: $45–$650

Founded by a professional rock climber, Patagonia was always going to make this list of the most sustainable, eco-friendly activewear brands.

Their huge range of sustainable outdoor clothing includes tees, hoodies, leggings, outerwear, hiking pants, sweatpants, and more—for the whole family. From sand sledding in the desert to snow sledding, their activewear is also built for all weather and activities.

Patagonia’s Ethical & Sustainability Practices

Materials:

Their eco-friendly materials are extensive: hemp, lyocell, recycled cotton, organic cotton, recycled nylon, recycled polyester, RDS-certified down, ethical wool, recycled wool, and even recycled spandex.

They’re also supporting the organic regenerative agriculture movement by test piloting its first-ever certification, the Regenerative Organic Certified™ program. Many of their products utilize bluesign® approved non-toxic materials

Supply chain & labor practices:

Year after year, the brand scores high on Fashion Revolution’s Fashion Transparency Index for efforts like the Footprint Chronicles. Located on each product page, it tells buyers exactly what factory each item is made in, with links to learn more about it.

While not every garment qualifies as fair trade athletic apparel, they’re overall Fair Trade certified and a Certified B Corp.

Carbon commitments & green practices:

Among countless other sustainable practices, Patagonia uses 100% organic or regenerative cotton and is on its way to using 100% renewable and recycled raw materials.

Plus, the majority of their garments now contain recycled materials to some extent. Their Worn Wear program accepts unwanted Patagonia pieces, repairs them, and either re-sells or recycles them.

Inclusivity:

Women’s sizes run XXS–3XL, and men’s XS–XL. In addition to inclusive imaging, they state, “We are a white-led outdoor company reliant on recreation on stolen Native lands that are not yet safe for all.”

They’re working to become an anti-racism organization by employing more POC and raising awareness.

Community & charitable giving:

Patagonia is a force when it comes to advocating for our planet (including divesting their own earnings directly into it). Patagonia Action Works helps customers get involved, too.

My Personal Review of Patagonia’s Houdini Jacket:

“I’m a huge Patagonia fan (maybe I have a bit too much of their stuff, but in my defense, it’s mostly secondhand!), but the Houdini Wind Jacket is one piece I can’t live without. This super lightweight, 100% recycled nylon windbreaker is perfect for early runs or hikes in the mountains. What I love most is that if I’m out for a long trek and start to get too warm, it packs up into its own pocket—so I can shed layers without missing a beat.”

Review by Amber McDaniel, SJ’s Head of Content

tentree

tentree has not been rated.

About tentree

Price range: $58–$98

Tentree’s has a small but sustainable range of InMotion ethical workout clothes. You’ll find essentials for men, women, and kids that include leggings, t-shirts, hoodies, sweatpants, sports bras, and shorts—like the essential InMotion Shorts with a loose leg cut to accommodate all kinds of activities.

tentree’s Ethical & Sustainability Practices

Materials:

The InMotion range predominantly features activewear made from recycled plastic: 79% recycled polyester blended with 21% elastane.

If you prefer your activewear to be more athleisurewear, you may find organic workout clothes made of materials like organic cotton and TENCEL™ lyocell.

Supply chain & labor practices:

Transparency and tentree are workout buddies. This Certified B Corp states exactly in which country every garment is made (Philippines, China, or India in this case), and their factory ledger includes audit and certification information.

Carbon commitments & green practices:

tentree sells Climate+ carbon offsets alongside their affordable, sustainable workout clothes. For a guilt-free post-workout shower, consider purchasing their Long Showers offset.

Inclusivity:

Women’s ethical gym wear runs XS–XL, and men’s S–XXL.

Community & charitable giving:

Ten trees are planted for every purchase (totalling 50 million and counting) supporting areas increasing biodiversity.

Arms Of Andes

Arms Of Andes has not been rated.

About Arms of Andes

Price range: $20–$475

Arms of Andes makes some of the most sustainable workout clothes out of Peru’s most functional fiber: alpaca wool. Nature’s ultimate (and compostable) fitness fabric is turned into leggings, hoodies, socks, underwear, sports bras, and shirts like the simple and oh-so-light merino weight 160 Alpaca Wool Shirt.

Arms of Andes’s Ethical & Sustainability Practices

Materials:

Everything is made from moisture-wicking, fast-drying, temperature-regulating, and antimicrobial 100% alpaca wool. It’s ideal for sustainable gym clothes because it’s antimicrobial (hello BO-resistant!) and regulates temperature, keeping you warm in winter and cool and dry in summer.

Supply chain & labor practices:

Alpaca yarn is sourced from local suppliers that purchase directly from herding families in the Peruvian Andes (sans middlemen). These herders use traditional farming techniques and form caring relationships with the animals. They receive veterinary care and regular checkups from Arms of Andes.

Carbon commitments & green practices:

Unlike other woolly animals, alpacas don’t destroy the soil but instead support healthy ecosystems by treading (and eating) lightly. While ethical cashmere is rare, ethical alpaca wool is achievable.

Inclusivity:

Women’s sizes run XS-L; Men’s S-XL.

My Personal Review of Arms of Andes’ Alpaca Wool Sweater:

“The Arms of Andes alpaca wool sweater is one of my favorite pieces for layering. It’s stylish and versatile, suitable for casual or more formal looks. The alpaca wool is wonderfully warm and breathable. I do notice a bit of initial itchiness when I first put it on, but thankfully, my skin adjusts quickly, and then I only notice the incredible softness.”

Review by Amber McDaniel, SJ’s Head of Content

Girlfriend Collective

Girlfriend Collective has not been rated.

About Girlfriend Collective

Price range: $28–$165

Looking for sustainable sportswear brands that are as supportive as your gym bestie? Girlfriend Collective has your spot offering a collection of leggings, sweats, bike shorts, one-pieces, sports bras, crop tops, and tees.

While their range of sustainable yoga clothes for women is on point, they do offer select men’s styles.

Girlfriend Collective’s Ethical & Sustainability Practices

Materials:

Rather than getting V sweaty in V (for virgin) polyester, Girlfriend Collective’s sustainable materials are mostly recycled with OEKO-TEX certification.

They include PET from recycled plastic bottles and ECONYL® LITE from recycled fishing nets, as well as some organic cotton, bamboo cupro, and a little spandex. Each one is dyed using sustainable dyes.

Supply chain & labor practices:

Since Taiwan is a hub for plastic ocean waste sourcing and recycling, this is where their fabric is spun before being sewn at an SA8000-certified factory in Vietnam.

Carbon commitments & green practices:

Seeing as PET is their primary material, Girlfriend Collective has helped recirculate over 10 million recycled plastic bottles so far. That’s not all they recycle, since all dying wastewater gets recaptured and reused and the residual dye mud gets turned into pavement.

They also use recycled packaging and work to keep GC clothes in circulation by offering an online means to recycle clothes for money in exchange for store credit, via ReGirlfriend.

Inclusivity:

Brands like Girlfriend Collective empower us all with XXS–6XL sizes for both tops and bottoms—easily one of the best plus-size eco-friendly activewear brands around.

Community & charitable giving:

While they regularly donate to an impressive list of organizations, they also run special campaigns to donate a percentage of sales to charities of their customers’ choosing.

My Personal Review of Girlfriend Collective’s Moss ReSet Cropped Long Sleeve:

“I own a whole range of GFC’s recycled workout clothes (and love them all), but if you want a workout layer without much bulk, I highly recommend the Moss ReSet Cropped Long Sleeve. It’s made of the same buttery soft recycled fabric as the hoodie version I also own, but features a more skin-tight and compressive fit. This is my favorite top to wear for yoga when I typically need a little more upper body warmth in the winter. It stays perfectly in place and doesn’t fall over my face in downward dog.”

Review by Amber McDaniel, SJ’s Head of Content

Iron Roots

Iron Roots has not been rated.

About Iron Roots

Price range: $42–$94

Do you like to work up a sweat in an ethical hoodie, or hemp jogger, or strip down to your sustainable bike shorts? Iron Roots‘ sustainable organic activewear ticks both.

Kicking microplastics off the team, they only use natural fabrics in their range of tees, shorts, hoodies, and sweatpants for men and women.

Iron Roots’ Ethical & Sustainability Practices

Materials:

They flat-out refuse synthetic fabrics (even recycled), so you’ll only find hemp fabric, GOTS-certified organic cotton, or FSC-certified TENCEL™ lyocell.

Supply chain & labor practices:

Iron Roots designs its clothes in the Netherlands and produces them in ISO-certified factories in Portugal or Greece.

Carbon commitments & green practices:

Minimalist plastic-free packaging, sustainable shipping, and discounts for sending worn-out Iron Roots apparel back to be recycled further reduce the carbon footprint of this sustainable fitness clothing brand.

Inclusivity:

Men’s ethical athletic wear comes in sizes S–XXL, and women’s in XS–L.

Community & charitable giving:

Iron Roots speaks at events and universities on slow fashion and awareness of greenwashing.

My Personal Review of Iron Roots:

“I own several pieces from Iron Roots, including their long-sleeve base top, zip-up hoodie, and hemp joggers. The fabric quality really stands out—soft, impressively breathable, and a clear step above the typical Nike or Adidas gear. Both the hoodie and base top have held up well during mountain biking sessions. Their lightweight design is a big plus, as I tend to overheat fairly quickly, and it’s no fun to deal with shedding layers mid-ride.

The hemp joggers have faded slightly over time, but if vibrant color isn’t a top priority, they’re easily some of the most comfortable sweatpants I’ve ever worn. Overall, I really love this small brand’s offerings, far better quality than your mega activewear brands.”

Review by Marco Maene, SJ Tester

Pact

Pact has not been rated.

About Pact

Price range: $28–$83

Pact has an impressive line of some of the most ethical activewear for the whole family. The range includes eco-friendly t-shirts, leggings, tops, supportive organic bras, hoodies, and socks.

Pact’s Ethical & Sustainability Practices

Materials:

Most of their affordable ethical activewear is made from GOTS-certified organic cotton (sometimes with a touch of elastane, in the case of their Purefit Collection) and non-toxic dyes.

Supply chain & labor practices:

As 74% of organic cotton is sourced in India, that’s where their Fair Trade workout clothes from USDA-certified factories are, too.

Carbon commitments & green practices:

Pact’s factories use conservative water and energy production methods. All shipping emissions are offset and they use compostable/recyclable packaging.

Inclusivity:

Women’s sizes XS–XL; Men’s S–XXL.

Community & charitable giving:

The Give Back, Wear Forward program accepts gently used clothes (of any brand) and donates them to non-profits. They encourage using the box your new sustainable exercise clothes came in to send back unwanted ones.

My Personal Review of Pact’s On The Go-To Rib Crop Tank:

“I want to tell you I live in my Pact On The Go-To Tank because I’m such a fitness fanatic, but if I’m being honest, it’s so comfortable AND supportive that I mostly end up wearing it when I’m not working out, too. The cut is perfect and not only is made from 91% GOTS-certified organic cotton (with 9% elastane), but it’s also Fair Trade-certified.”

Review by Amber McDaniel, SJ’s Head of Content

MATE The Label

MATE The Label has not been rated.

About MATE The Label

Price range: $58–$232

MATE The Label is a clothing line that’s made sustainably in Los Angeles with non-toxic, natural, and organic materials. Sweats, tees, tanks, undies, bras, and its very own line called MOVE.

Hit the ground running in a set of Organic Stretch Midi Leggings, topped off with your choice of color sports bra bundle. MATE is also one of our favorite sustainable loungewear brands for a well-deserved post-workout chill.

Mate The Label’s Ethical & Sustainability Practices

Materials:

The materials used in the range of non-toxic workout clothes contain no restricted substances, use organic yarns and low-impact dyes, and only 8% spandex. Their sustainable activewear fabrics include organic cotton jersey, linen, and TENCEL™ Lyocell.

Supply chain & labor practices:

MATE prefers to keep its supply chain close at hand. The entire range is made within a 17-mile radius of the company headquarters in Los Angeles.

The strict protocols the company puts in place ensure the factories they work with are safe, comfortable, fair, and compliant with California labor laws.

Carbon commitments & green practices:

Online orders are shipped with recycled paper mailers and boxes that are recyclable and made in Los Angeles. MATE also takes back old garments, recycles them, and gives them new life as another MATE product.

Inclusivity:

Their women’s only range of sustainable clothing runs XS-XXL.

Community & charitable giving:

Purchasers of MATE products have the option to donate 1% of the purchase price to a nonprofit of their choice.

My Personal Review of MATE the Label’s Organic Stretch Racer Tank:

“If I could live in bra tops, I probably would, so the bar (bra?) is high, but this one still skyrocketed to the top of my faves. I can’t get over how flattering the fit is, hugging the body perfectly and providing great chest support without feeling restrictive. The shaping effect enhances my minimal silhouette, making it ideal for both workouts and casual wear. Plus, the soft, organic fabric feels amazing and never chafes.”

Review by Amber McDaniel, SJ’s Head of Content

Definite Articles

Definite Articles has not been rated.

About Definite Articles

Price range: $14–$98

What is the best sustainable fabric for activewear?

If there’s one thing Definite Articles thinks it definitely isn’t, is plastic—even recycled forms. That’s why their whole line of sustainable gym wear—leggings, tanks, joggers, and hoodies—is made of a revolutionary performance fabric that will biodegrade when you’re ready to say goodbye.

Definite Articles Ethical & Sustainability Practices

Materials:

DA’s range of sustainable workout clothes for men, women, and kids is made using 23% CiCLO recycled polyester, 51% CiCLO nylon, 23% better cotton initiative, and 3% spandex.

CiCLO is a natural additive used when spinning the yarns. It makes the plastic particles in sustainable clothing act like natural fibers. The additive creates tiny holes within the plastic fibers, enabling the fabric to break down and biodegrade as natural fibers would.

And rest (but not too long!) easy knowing you’re wearing sustainable leggings that are free of forever chemicals like BPA and PFAs.

Supply chain & labor practices:

Definite Articles is a Certified B Corp and strives to ensure workers are treated fairly across the supply chain. The company has a Supplier Code of Conduct which represents its beliefs and ensures they are embedded in every decision it makes.

Carbon commitments & green practices:

The Definite collection of the best sustainable athletic wear is all made within a geographic footprint that spans just 2,500 miles in the Americas.

Locally sourced yarns are spun in North California. These are then stitched into the performance gear in Colombia. In Texas, orders are packaged into biodegradable bags before being delivered to their new home.

Inclusivity:

Women’s sustainable activewear runs XS-XL, and men’s sizes run XS–XXL.

Community & charitable giving:

2% of the company’s annual revenue is donated to support nonprofits dedicated to preserving our planet and making it a healthier, happier place to be.

My Personal Review of Definite Article’s Riverline Racerback Bra & Trimline Legging:

“Definite Articles offers one definitely supportive choice: an iconic-looking BPA-free sports bra, the Riverline Racerback Bra, which I love for its quality and fit. Available in a range of brilliant colors, this bra sculpts and supports while remaining stretchy and breathable. This bra provides excellent compression and support, and I love the soft, slippery feel of the eco-friendly fabric.

I also love the Trimline ⅞ Legging. The high, wide waistband is super comfy and doesn’t dig in at all, although if you’ve got a more athletic build with muscular legs like I do, you might want to size up. These leggings fit a bit tighter around the legs than I usually like.

Review by Amber McDaniel, SJ’s Head of Content

Tree Tribe

Tree Tribe has not been rated.

About Tree Tribe

Price range: $44–$113

Tree Tribe is an outdoor lifestyle brand that gives back to the Earth by planting trees. To date, this sustainable gym clothing brand has helped plant over 450,000 trees.

The range of ethical items includes swim trunks, leggings, his and hers tees, sports bras, and leaf leather wallets.

They also have plastic-free water bottles to help you stay hydrated during your workout.

Tree Tribe’s Ethical & Sustainability Practices

Materials:

Tree Tribe uses recycled polyester blended with spandex to provide compression but at the same time durability and a flexible stretch. Water-based inks are fused to the fabric using sublimation dye printing which ensures the designs won’t fade or crack over time.

Supply chain & labor practices:

Items are hand-crafted in the USA which means a minimal carbon footprint and that all US labor laws are complied with.

Carbon commitments & green practices:

Tree Tribe partners with several tree-planting companies, including Trees for the Future, Eden Reforestation Projects, and American Forests. A tree is planted every time the company makes a sale.

Inclusivity:

Their range primarily consists of ethical athletic wear for women in sizes XS-XL, but they also offer men’s tee’s in S–2XL.

My Personal Review of Tree Tribe’s Exotic Escape Yoga Shorts & Sandstone Leggings:

“My top pick from Tree Tribe has to be the yoga shorts, especially the Exotic Escape design—because I’m obviously all about anything jungle-themed here at Sustainable Jungle! Luckily, these shorts are so comfy that I’ve never wanted to escape from wearing them. The fabric is super stretchy and just the right thickness—not too heavy or tight—making them perfect for yoga or just kicking back and relaxing.

I also tested out their leggings. There are tons of cool designs, but I’m definitely a desert soul, so the Sandstone pattern was a no-brainer. The fabric is super stretchy and the flatlock stitching keeps everything smooth, so no chafing, even when I’m trying to nail those tricky yoga poses. I’m all about a high-waisted fit, but you can also go for a regular rise if that’s more your style.”

Review by Amber McDaniel, SJ’s Head of Content