As someone who spends a lot of time moving—whether it’s yoga, running errands, or just lounging at home—I’ve come to appreciate the importance of comfortable, high-quality activewear. But over the years, I’ve also grown more conscious about the materials my clothes are made from. That’s why organic cotton has become one of my favorite fabrics for leggings and yoga pants. It’s soft, breathable, and kinder to the planet than conventional cotton or synthetic alternatives.

In this guide, I’ll share nine incredible brands that are leading the way in crafting organic cotton leggings and yoga pants for 2025. These pieces are not only eco-friendly but also stylish, durable, and perfect for every active (or not-so-active) moment in your life. Let’s dive in!

1. Pact: Soft, Sustainable Basics for Every Day

When it comes to affordable, sustainable activewear, Pact is a brand I always recommend. Their organic cotton leggings and yoga pants are buttery soft and designed with comfort in mind. What I love most about Pact is their commitment to fair trade practices and using GOTS-certified organic cotton, which ensures the fabric is free from harmful chemicals.

Their designs are simple yet versatile, making them ideal for layering or wearing on their own. Whether you’re heading to a yoga class or curling up with a book, Pact’s pieces feel like a second skin. Plus, their affordability makes sustainable fashion accessible to everyone.

2. People Tree: Ethical Activewear with a Bohemian Vibe

People Tree has been a pioneer in ethical fashion for decades, and their organic cotton leggings and yoga pants are no exception. Made from 100% certified organic cotton, these pieces are gentle on your skin and the environment.

What sets People Tree apart is their bohemian-inspired aesthetic. Think flowy silhouettes, earthy tones, and subtle patterns that add a touch of personality to your workout wardrobe. By choosing People Tree, we’re supporting artisans in developing countries while reducing our carbon footprint—a decision I feel proud to make every time.

3. Tentree: Eco-Friendly Activewear That Gives Back

Tentree’s mission is simple: plant ten trees for every item purchased. This initiative alone makes me want to support them, but their organic cotton leggings and yoga pants are equally impressive. Made from a blend of organic cotton and recycled materials, these pieces are soft, stretchy, and perfect for any activity.

I love how Tentree combines functionality with style. Their leggings feature moisture-wicking properties and reinforced seams, ensuring they can keep up with even the most intense workouts. Plus, knowing that my purchase helps reforest the planet gives me an extra boost of motivation during my morning runs.

4. Boody: Bamboo Meets Organic Cotton for Ultimate Comfort

Boody is a brand that blends bamboo and organic cotton to create activewear that’s as comfortable as it is sustainable. Their leggings and yoga pants are incredibly soft, breathable, and moisture-wicking, making them ideal for hot yoga sessions or outdoor adventures.

What I admire most about Boody is their dedication to sustainability. They use eco-friendly dyes and prioritize low-impact production methods, ensuring their pieces leave a minimal footprint. If you’re looking for activewear that feels luxurious without breaking the bank, Boody is a brand worth exploring.

5. Organic Basics: Minimalist Designs with Maximum Impact

Organic Basics takes a minimalist approach to activewear, focusing on timeless designs and high-quality materials. Their organic cotton leggings and yoga pants are crafted from GOTS-certified cotton and feature thoughtful details like flatlock seams and elastic-free waistbands for ultimate comfort.

I appreciate how Organic Basics avoids unnecessary embellishments, letting the quality of the fabric speak for itself. Their pieces are perfect for those who prefer understated elegance over flashy logos. Plus, their commitment to transparency and ethical manufacturing makes me feel good about every purchase.

6. Prana: Performance Meets Sustainability

Prana is a brand that truly understands the needs of active individuals. Their organic cotton leggings and yoga pants are designed for performance, featuring four-way stretch, moisture-wicking technology, and UPF protection. Yet, they never compromise on sustainability.

What draws me to Prana is their focus on durability. These pieces are built to last, whether you’re hiking, practicing yoga, or simply running errands. I also love their vibrant colors and unique prints, which add a playful touch to my activewear collection. Prana proves that sustainable fashion can be both functional and fun.

7. Thought Clothing: Nature-Inspired Activewear

Thought Clothing brings the beauty of nature into their activewear line, featuring botanical prints and earthy tones that evoke a sense of calm. Their organic cotton leggings and yoga pants are soft, breathable, and perfect for mindful movement.

What resonates with me most is their emphasis on mindfulness—not just in design but in production. Thought Clothing uses eco-friendly dyes and supports ethical factories, ensuring their pieces are as kind to people as they are to the planet. Wearing their activewear feels like a reminder to slow down and connect with the world around me.

8. Groceries Apparel: Bold Colors, Clean Materials

If you’re someone who loves bold, vibrant colors, Groceries Apparel is the brand for you. Their organic cotton leggings and yoga pants come in a range of eye-catching hues, all dyed using non-toxic, eco-friendly processes.

What I admire most about Groceries Apparel is their commitment to clean materials. They avoid synthetic fabrics and harmful chemicals, creating pieces that are safe for both your skin and the environment. Their leggings are also incredibly soft and stretchy, making them perfect for everything from Pilates to lounging at home.

9. Ecoalf: Innovative Designs for the Modern Activist

Ecoalf is a brand that’s redefining what sustainable activewear looks like. Their organic cotton leggings and yoga pants are crafted from innovative materials, often blending organic cotton with recycled fibers like nylon or polyester. The result? Pieces that are durable, stylish, and eco-conscious.

I’m particularly impressed by Ecoalf’s focus on innovation. They use cutting-edge technology to reduce water consumption and waste during production, setting a new standard for sustainable fashion. Their sleek designs and modern cuts make them a favorite among urban activists who want to look good while doing good.

Why Organic Cotton Matters in Activewear

Throughout my journey of discovering these brands, I’ve realized that choosing organic cotton isn’t just about comfort—it’s about making a positive impact. Conventional cotton farming relies heavily on pesticides and synthetic fertilizers, which harm the soil, water, and farmers’ health. Organic cotton, on the other hand, is grown without these harmful chemicals, promoting biodiversity and protecting ecosystems.

By opting for organic cotton leggings and yoga pants, we’re supporting brands that prioritize the well-being of people and the planet. These nine brands prove that sustainability doesn’t mean sacrificing style or performance. Instead, they show us that we can move through life with ease, knowing our choices reflect our values.