Idk if they're technically sports shoes but as far as I've searched, Brooks shoes doesn't support the genocide.

Gymshark?

You should try out the apps/websites such as No Thanks, Boycatt, Disoccupied.

Montirex

Avia

I have socks from Maggie's that are excellent but haven't tried their leggings yet.

And I second the Pact recommendation! I don't love how their athletic wear fits me personally, but they're high quality and I own a lot of their other products.

While not biker shorts, I went on a deep dive into organic workout leggings and compared a lot of those brands on a blogpost so maybe it might be helpful?

https://shopsensibly.wordpress.com/2025/06/08/workout-woes-5-organic-cotton-activewear-leggings-comparison-and-review/

Love Jungmaven! I’ve heard good things about Pact as well.

I haven’t come across any workout leggings that are truly 100% plastic-free (most activewear needs at least a little spandex for stretch), but Lezat makes organic cotton leggings that come pretty close mostly cotton with just a small amount of stretch material. They feel way more natural and breathable than full polyester/nylon ones.

Most of my lounge and active wear are from Mate. Haven't bought any since '23 so can't speak to current quality, but all pieces I've bought are still in rotation. They take a lot of abuse and are machined washed and dried after every wear. I really hope the quality isn't as bad as they say because I'm planning on some new purchases toward the end of the year or early next year...

Maggie's is also good (or they were - again haven't bought from them in a while).

I enjoy Cotopaxi and Patagonia but they lean more towards outdoors than gym style workout gear.

Try www.Seadon.co :)

I understand that self-promotion is frowned upon here, but since you asked…

www.reclaim-apparel.com

It’s a clothing brand I launched a few months ago that’s been a couple of years in the making. All items are 100% lyocel, manufactured in Portugal and only uses water based dyes. We plant a tree for every item sold via One Tree Planter and donate a portion of the revenue from each sale to Calm, a mental healthy charity.

If you have any questions please feel free to ask away.

Reigning Champ? Ryu? Lululemon? They're all better than Nike/Adidas/etc. but I don't know if they're exactly "sustainable"

Patagonia. I'm currently wearing a hoodie made of recycled plastic bottles and fabric scraps and some nice cotton joggers. I'm comfy as fuck.

L L Bean.

My gut feeling is that sustainability is a marketing weapon by mid level brands going after the biggest players. It is hard to define. Are synthetics sustainable? Are natural fibers good or bad? Are fashions which often change good? If we consume less what about the sustainability of the livelihoods of all those employed in the clothing and shoe industry? I don't have any answers, just thoughts.

outlier

their futuredarts // strongdarts have a heavy athleisure vibe to me

Abe (one of the co-founders) is a redditor and has been starting a conversation about reducing shipping waste lately.

They probably can't compare to patagonia on the sustainability front, but they definitely have stuff that falls in the high end athleisure area.

Girlfriend Collective is eco-friendly. Materials are recycled, no plastic shipping, small batch production.

Wearetala has some great products but you have to be on the ball with restocks

Patagonia and prana

You could have a look at tentree. I don't know much about it but see their ads ALL the time on social media.

Prana

Goodwill

Pettet Endurance Project

Just got some yoga pants from prAna and I'm loving them!

Pact

Girlfriend collective, Patagonia, Pact, Boody

My favorite is wearpact.com

Adidas by Stella McCartney (SM uses wool and silk though, just not in the adidas collection)

vegan gym is one. There's others in r/veganknowledge for the vegan online stores. I just never got around to color coding each type - so you'd have to do some digging around, but I placed more than a couple in there. (if someone helps me with the color coding - then I can pull them out a lot more easily!!).

I just buy 2nd hand from thrift shops, no need to pollute the plant further buying new

AFAIK On Running does not use any animal derived material in their shoes and apparel. But it’s also a large commercial brand so I’m not sure if this is what you’re after.

patagonia!

How about Girlfriend Collective? I have a pair of their leggings made from recycled plastic bottles and they’re excellent quality - https://www.girlfriend.com

Girlfriend collective are really good! They are sustainable and very size inclusive.

I love Rose Buddha! It's a canadian brand. They make clothes from recycled pastic bottle and the clothes are made in Canada.

TALA https://www.wearetala.com

Athleta is a somewhat sustainable activewear brand, they’re a certified B Corp, however they’re owned by the Gap brand and according to the Good On You app “it’s a start.” They use recycled materials sometimes, try to use less water, etc, but I still see them as a bit of a fast fashion brand. However, I have quite a few pieces from them and I love them.

Girlfriend Collective has leggings, shorts, sports bras, and I think now dresses and underwear. I have a pair of biker shorts, leggings, and a bra from them. They are made out of recycled water bottles and they send you a wash bag to prevent micro plastics from getting in the water stream. While I like their pieces, the fabric is not quite as stretchy as most leggings, so despite their website saying to size down for compression if you’re between sizes, I recommend sizing up.

Someone else mentioned Patagonia and I honestly think they’re the best and most reliable. If you look at their website they are extremely transparent. Every item includes details on where it’s made, the fabric, the impact, etc. They also have a website called Worn Wear that sells used Patagonia items but the styles can be very outdated.

The most eco-friendly option is secondhand or resale. New clothing is not sustainable no matter what they claim. I recommend Revive Athletics.

Completely agree with the suggestions made in the comments! Things like shopping secondhand and even swapping can be incredible.

If you’re looking for specific brands, I’d recommend the likes of Patagonia, Pact, Girlfriend Collective & I’ve heard TALA is good but do used ‘good to know’ as a way to filter through any greenwashing

Athletic clothing is so easy to find secondhand! The stuff lasts forever!

To combine my two favorite answers: Secondhand Patagonia clothing.

Patagonia is one of the most sustainable and accountable clothing brands out there (not perfect, but moving in the right direction), they sell used clothing on their website, they are high quality, and they will fix worn clothes for free (assuming they are not totally shredded).

Short of that, most secondhand stores have TONS of workout clothes, especially for women.

You can filter our directory by Activewear to find a bunch of great brands.

Sustainable fashion is all about making better choices, be that using what you have, repairing it, thrifting, swapping, or supporting more sustainable brands. These are all important parts of the solution and it's all about better choices, not perfect choices.