Whether you’re working out or relaxing at home, activewear is the perfect outfit. I am a huge fan of yoga pants and relaxing wear, but there aren’t many sustainable options available in Japan.
Though I usually buy clothes secondhand, I prefer to buy items that I wear close to skin. Therefore, it is important that I find sustainable options.
In this article, I’ll introduce sustainable activewear brands you can buy in or ship to Japan.
How to Choose Sustainable Activewear
Choose Sustainable Materials
Clothing production consumes a lot of resources. That’s why it’s important to choose brands that use recycled materials. As demand for recycled fabrics increases, recycling practices improve, helping reduce waste.
Organic materials do use natural resources but are grown without harmful pesticides, which makes them gentler on the environment.
Look for Fair Trade Certification
Many clothes are made in developing countries under poor working conditions. Workers are often underpaid or unsafe, and child labor is still a problem in some areas. Products with fair trade certification are monitored by third-party organizations to ensure safe and fair working environments. While these items may cost more, they help support better lives for workers and contribute to a more just society.
Size-Inclusive Brands
A sustainable society is one where everyone can live authentically. Even if you find cute clothes, it’s discouraging if they’re not available in your size. Brands that offer inclusive sizing help eliminate body discrimination and allow everyone to enjoy fashion. Brands that use plus-size models in their product photos also send a positive message to society.
Sustainable Activewear Brands
Patagonia
Why we recommend
- 1% for the Planet member
- Repair services available
Patagonia is tackling the climate crisis by rethinking how its products are made and working to reduce greenhouse gas emissions. The company takes responsibility not only for its own operations but also its entire supply chain. They support local initiatives for environmental protection and moving away from fossil fuels. Patagonia aims to transform both business and society for a sustainable future.
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Girlfriend Collective
Why we recommend
- Uses recycled materials
- Wide range of sizes
- SA8000-certified (fair wages and safe labor conditions)
Based in Seattle, this brand recycles items like PET bottles and fishing nets to make its clothes. Their commitment to transparency is another plus. Their high-quality leggings and bras support a slow fashion lifestyle. With sizes from XXS to 6XL, they cater to all body types.
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tentree
Why we recommend
- B Corp certified
- SA8000 certified
- Fair trade practices
This Canadian brand plants ten trees for every product sold (hence the name tentree). Their goal is to gradually help restore the environment. They use recycled or organic materials and ensure fair labor practices.
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Organic Basics
Why we recommend
- B Corp certified
- Organic materials
- 1% for the Planet member
From Denmark, Organic Basics operates on the motto, “Nobody’s perfect. But everyone can make a positive change.” They are highly transparent and even disclose the carbon footprint of each product. They also share their mistakes, not just their successes. Their products are durable and made in Europe for long-term use. Shipping to Japan is available via the official website.
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Boody
Why we recommend
- B Corp certified
- ECOCERT certified
- PETA certified
Boody uses bamboo fibers—a fast-growing plant that requires no pesticides or chemical fertilizers. The brand also focuses on ethical labor practices, including fair wages and working hours. They also use organic cotton in some products.
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Pact
Why we recommend
- Fair Trade certified
- Organic materials
Pact offers organic cotton items with fair trade certification, ensuring workers are treated fairly. They also disclose their carbon emissions, which helps you make more informed choices. Products can be shipped to Japan via their official site.
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Mate The Label
Why we recommend
- GOTS-certified organic materials
- Climate Neutral certified
- B Corp certified
MATE is a clean fashion brand that uses only non-toxic, natural, and organic materials. They care about the full life cycle of their products—from production to recycling. With a female-focused perspective, they create timeless, daily essentials. The brand is plastic-free, ethically produced, and designed for circular use. They ship their items to Japan.
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Jungmaven
Why we recommend
- Uses natural hemp
- GOTS and OCS certified
Founded in the 1990s, Jungmaven focuses on the environmental benefits of hemp, a sustainable alternative to traditional fabrics. Founder Robert Jungmann chose hemp as a solution to deforestation. All products are ethically made and contribute to a sustainable future. Shipping to Japan is available.
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BOLDWILL
Why we recommend
- GOTS-certified organic materials
- OEKO-TEX certified
BOLDWILL is a Dutch brand aiming to create plastic-free, healthy, and sustainable sportswear. They prioritize slow progress, clean materials, and ethical manufacturing, offering activewear that’s kind to both the wearer and the planet.
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Comfortable Activewear, Indoors and Out
Whether you’re relaxing at home or heading outdoors for a workout, the right activewear makes all the difference. Since these clothes are worn close to the skin, secondhand options are limited. If you’re buying new, it’s worth choosing items that are sustainable and built to last. Find leggings and tops that are not only comfy but also eco-friendly—and enjoy your downtime in style!
