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Our Sustainability Story

We're Not Perfect, But We're Trying  |  Radically Better Underwear

We strive to innovate every day, constantly looking for better ways to manufacture our products. We take every possible action towards reducing our impact on the environment through our use of sustainable materials and methods.

Our promise to you is to remain progressive in every way we can. We love this planet for its beautiful landscapes that allows us to ride, slide, jump, run and hang in. So, together, may we all do our part to ensure we leave this place better than we found it.


We're going carbon neutral!

Carbon Neutral Renewable ProjectsEvery Tencel™ Modal product purchased on BN3TH.ca is now carbon neutral. We use eco-friendly fabrics and employ sustainable manufacturing practices to significantly reduce our CO2 emissions. But it will take some time to reduce our emissions all the way to net zero, as there are still emissions which are unavoidable. This is where carbon offset comes in. 

We’re tackling these unavoidable emissions by investing in offset projects such as renewable energy, forest conservation and energy efficiency. These projects prevent future carbon emissions and remove existing CO2 from the atmosphere.  

We buy carbon offset credits from these projects that are equal to our unavoidable emissions. This provides crucial funding for these projects to continue to thrive while making all our products carbon neutral from ‘seed to shelf’.  

We worked closely with Green Story to calculate the CO2 emissions from each stage of our supply chain. This enabled us to measure our carbon footprint for each product and find the best suited carbon offset projects. 




Industry Leaders

TENCEL Modal Fibres - Sustainable, Soft, RadicalTENCEL™ Modal fibers, used in over 90% of our products, are manufactured by environmentally responsible production processes. The fibers originate from sustainable wood and pulp sources and are certified as compostable and biodegradable. We add a small amount of spandex to these products that doesn't completely biodegrade.  Along with its botanic origin, the key TENCEL™ Modal benefits include extreme softness, enhanced breathability, moisture management and color retention. Experience TENCEL™ Modal fibers for yourself with our Classic Boxer Briefs and Trunks, Tees and Sleepwear.



About TENCEL™ Modal

  • Manufactured by environmentally responsible production processes
  • Originate from sustainable wood and pulp sources
  • Certified compostable & biodegradable as raw fibers
  • Products last longer, prolonging the life of the garment & reducing the amount of clothing that ends up in landfills
  • Found in our Classics Boxer Briefs and Trunks, Tees and Sleepwear

Key Features

  • Incredibly soft
  • Botanic origin
  • Enhanced breathability
  • Moisture management
  • Color retention


The Entourage Series

Made with 100% Post-Consumer Recycled Material ♻️

Heather Deep Water Supportive Boxer BriefThese active Boxer Briefs feature our new EcoDry fabric which is softer, more durable and breathable than ever. Plus, it’s way better for the planet because the fabric comes from recycled materials, mainly plastic water bottles. So now you can wick sweat and feel good about your environment impact while doing it.


  • Made from 100% post-consumer recycled materials
  • New EcoDry fabric is soft, durable & breathable
  • Featuring a wide range of radical prints and colors

Sustainabily-Sourced Merino Wool

Made with 100% Responsible Wool Standard fabrics

Heather Deep Water Supportive Boxer BriefOur Merino wool products are Responsible Wool Standard certified, which ensure transparency across the supply chain from the farmer to trader to sourcing to yarn to fabric to garment…all processing steps must be certified to make sure the chain of custody is maintained to the last level of production. Meaning it’s all sustainable and traceable. While the farm scope ensures positive animal welfare, land management and social welfare for workers.


  • Temperature regulating.
  • Naturally anti-odor
  • Breathable


BN3TH - Recycled Packaging We use recyclable packaging.

Boxer Briefs and Trunks come in sleek new product bags, which are resealable if you’d like to repurpose them, or 100% recyclable if they’ve served their purpose. By switching from a box to these softpack bags, we were able to reduce our outbound shipping material usage by 30%.

  • Sleek resealable bag
  • 100% recyclable
  • Reduced carbon footprint

Lighter, Sustainable, Bio-degradable

BN3TH - biodegradable bag | sustainable packaging
We've switched to a new way of packaging your BN3TH sleepwear, Merino Wool, and Joggers. To keep them fresh all the way to your door, they're safely in a lightweight, biodegradable poly bag that reduces the environmental impact and lowers the carbon needed to bring them to you.

From Us to You

We also eliminated non-recyclable poly bags from our outbound shipping materials in favour of eco-friendly, sustainable poly mailers. Larger orders (more than 6 items) are shipped in a cardboard box that's easily recyclable.

  • Recycled: made from 100% recycled content
  • Reusable: dual adhesive strip allows for reuse
  • Recyclable: keep these out of the landfill



Throughout the year, we choose to partner with best in class organizations who are leaders in their fields, constantly innovating and inspiring others to do better when it comes to protecting our home: Mother Earth. Details on these key initiatives can be found in our FAQ when partnerships are running.

Protect Our Winters (POW)

POW is a group of passionate outdoors people, professional athletes and industry brands mobilizing the outdoor sports community to be an active leader in the fight against climate change and its affect on our winters.

The Surfrider Foundation

The Surfrider Foundation is a community of everyday people who passionately protect our oceans. What started as a small group of progressive surfers has grown into one of the most powerful coastal protection groups in the world on a local, regional, national and global level by engaging environmental experts to create solutions to protect the coast.

One Tree Planted

One Tree Planted is a non-profit organization focused on global reforestation in North America, South America, Asia and Africa. Each $1 donated to the One Tree Planted organization plants one tree in an area affected by forest fires or floods, and their projects create sustainable jobs, build communities and protect habitat for biodiversity.