Refreshing your wardrobe, whether it be out with the old or in with the new, is like a breath of fresh air; liberating, cleansing even… but what about that underwear you’ve had for longer than you would care to admit? Those undershirts starting to yellow in the armpits? Those favorite pairs of socks thinning in the heel? Must I say that nagging bra with an exposed underwire that should probably be replaced?
Per the industry, the standard rule of thumb is to refresh undergarments every 6 months to one year, depending on the wear they receive. That being said, it might be time to restock those neglected underwear and sock drawers.
Eco-Stylist believes in rejuvenating your drawers with undergarments that not only look and feel great on, but are manufactured and distributed both ethically and sustainably. Our certified brands put an emphasis on how their clothing is made, as well as how the people making them are treated.
From the following list of brands, shoppers can purchase undergarments designed to make them (both him and her) look and feel great as a conscious consumer.
Ethical Underwear Brands for Him and Her (for Everyone)
Eco-Stylist is reader-supported. If you make a purchase using our links, we may earn a commission. We only feature fashion brands that pass our sustainable brand criteria. Learn more here.
Pact
Pact goes above and beyond by caring about the fabric they use and the means in which their products are manufactured. By saving water using organic cotton, avoiding the use of toxic chemicals that harm the environment, and offering features such as carbon offset shipping, give back box, and thoughtful packaging, Pact cares.
Shop men’s boxers, briefs, undershirts and socks, or women’s bras, underwear, and socks featuring holiday prints to neutrals at Pact.
Patagonia
Patagonia has undergarments for everyone to enjoy: from basics to florals, designed for your bed or the water. Patagonia shares their amassed wealth and gives 1% of their profits back in effort to preserve and restore the environment.
Patagonia ensures products are produced in safe, legal, fair, and humane conditions — striving to be transparent with where and whom they are doing business with.
Dedicated
Dedicated combines playful, bold designs with a strong commitment to sustainability. The brand partners with Fairtrade-certified cotton producers and uses GOTS-certified organic cotton, recycled polyester, and TENCEL™ Lyocell across their collections, including underwear. Their factories follow strict social and environmental standards to ensure fair working conditions.
Dedicated offers a wide range of men’s boxer briefs, socks, and t-shirts, alongside women’s underwear, bralettes, and loungewear. Known for their fun prints and eco-friendly fabrics, their pieces prove that sustainable fashion doesn’t have to be boring.
Icebreaker
Icebreaker offers transparency into their supply chain and excels in Sustainably Made. The brand shares their water and CO2 footprint, uses more sustainable materials, and is committed to sustainable packaging.
Something unique about Icebreaker’s underwear is that it is mostly merino wool based, with a focus on performance, breathability, and natural odor resistance. Icebreaker has a nice selection of briefs, boxers, and undershirts for men, and bras and panties for women.
Tentree
Tentree is one of our highest rated brands, earning our Gold rating. Among other things they invest in circularity, taking back your old Tentree clothes and either reselling or recycling them.
Their underwear features comfortable styles made from TENCEL and organic cotton.
BAM Bamboo Clothing
We rated BAM excellent in Transparency and Sustainably Made. 64% of their clothes are made from OEKO-TEX certified bamboo and they share their supply chain, their CO2 footprint, and their water footprint on their website.
One thing special about BAM’s underwear is of course, the bamboo fabric. Featuring soft lightweight fits to keep you cool, dry, and fresh.
Conscious Step
Conscious Step is a unique sock brand. Not only do they sell socks made of organic materials and certified Fair Trade, but they ensure every sock purchase supports a partnering organization and the communities they serve.
The cherry on top? They come in fun patterns that give a face to the cause each purchase supports, ranging from safe water usage, tree planting for cleaner air, and book donations as well as meals provided for children.
Ethical Women’s Underwear Brands (Just for Her)
Girlfriend Collective
Girlfriend Collective is all about body positive, eco-friendly clothing that’s comfortable. Girlfriend Collective ensures ethical production with their SA8000 certification.
When it comes to underwear Girlfriend sports a selection of brans and panties in sizes up to 6XL. These intimates are made from recycled materials and are recyclable too!
Subset
Subset (formerly known as Knickey) is your one stop shop to refresh your undies and recycle your old ones. They offer women’s underwear that is Fair Trade certified and made with non-toxic natural fibers.
When it comes to underwear Subset offers a variety of options including briefs, bikinis, hipsters, thongs, and bralettes in many different colors. The prices are competitive and don’t forget to send in your old undies for you’re recycling—you’ll even get a free pair!
KNOWN SUPPLY
KNOWN SUPPLY’s Discreture line specializes in ethical women’s underwear and intimates, featuring GOTS-certified organic cotton produced in Fair Trade Certified factories. These pieces are clean, comfortable, and made with care for both your body and the planet.
When it comes to underwear, Discreture offers a curated selection of boyshorts, bralettes, thongs, and more—available in inclusive sizing from 2XS up to 3XL.
Ethical Men’s Underwear Brands (Just for Him)
Asket
ASKET focuses on timeless essentials designed to last, with full transparency on the impact of each piece. While not a traditional underwear brand, they offer boxer briefs and socks made from GOTS-certified organic cotton and produced in ethical European factories.
When it comes to sustainability, ASKET stands out with its Full Traceability Standard—tracking every step of production from farm to factory. They also provide an Impact Receipt for each product, showing the CO₂, water, and energy footprint, so you know exactly what you’re buying into.
Taylor Stitch
Taylor Stitch designs high quality menswear built for the long haul. They offer transparency into where their gear is made and use predominately more sustainable materials.
Taylor Stitch has a small selection of men’s underwear but don’t sleep on their boxer briefs. They’re soft, light, and made with breathable merino wool.
Looking for more ethical brands?
Refreshing your undergarments is all too often forgotten. With the above Eco-Stylist certified brands, shoppers get all the rewarding benefits of sustainability meets comfort.
To shop Eco-Stylist for more wardrobe refreshening pieces that match your values, use our Sustainable Brands Directory. For more underwear brands just filter our directory by clothing—>underwear 🙂
For more sustainable underwear
Check out our curated shop:
*Article last updated 08/18/25.
Emma is a writer at Eco-Stylist. She studies journalism and mass communications at the University of Iowa. Emma’s love for sustainable fashion was sparked by thrifting with her mom throughout her childhood.
