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Who We Are

One Celsius is a brand of t-shirts made in the USA from 100% recycled materials. Each t-shirt helps fight climate change by saving water and energy, cutting emissions, and diverting waste from landfills and oceans. Proceeds from all sales support climate action and clean energy projects around the globe.

One Celsius T-shirts and Hoodie Collection

Our Mission

We are on a mission to create the most planet-friendly brand of apparel and accessories.


Our story began in 2014 with a simple question - can we put the 11 million tons of textile and the 7 billion pounds of plastic that makes its way into our landfills and oceans, to good use? Not only would the recycling of this enormous waste save billions of gallons of water that is typically used in their production, it also eliminates the need to produce new material, which drastically reduces billions of pounds of CO2 emissions.

Cotton textile scraps before they are upcycled into new cotton yarn

With the help of partners in recycling companies, yarn mills, knitters, weavers, and cut-and-sew factories, we began our journey towards answering this question.

In early 2016, we opened our online store with two basic black and white t-shirts. Today we sell a variety of different colors, as blanks and as printed t-shirts. We are proud to be one of the first few carbon-neutral brands of apparel that also supports climate action and clean energy projects around the globe.

One Celsius black and white men's and women's t-shirts


Each of our t-shirts is made from a combination of upcycled cotton textile scraps and post-consumer plastic waste. This is the Recover Upcycled Textile system in which waste is first collected and diverted from entering our landfills, and then cleaned for processing. The cleaned waste is color-segregated into fiber. 

Color segregated fiber produced from upcycled cotton textile scraps

The fiber is then spun into yarn, which is then knit or woven into fabric.

Fiber spun into yarn


All our t-shirts are knit, woven, cut, and sewn at factories around the USA. By producing the fabric and the finished goods in the USA we support local jobs and economies, ensuring fair wages to workers and safe working environments, and limiting air and water pollution caused due to international shipping.

Seamsters at a factory in the USA sewing t-shirts and hoodies 

Our Impact

Our t-shirts are one of the most planet-friendly you can buy. Below is a graphic detailing the environmental impact, the water, energy, and CO2 savings from a single One Celsius t-shirt, called Zero Carbon T-shirts. 

For more details on our products, visit our store here.

One Celsius Zero Carbon T-shirt Environmental Impact


For wholesale or retail inquiries, please use the form here.


For other questions or comments, get in touch with us via email at hello@onecelsius.com or join us on our social media channels listed at the bottom of this page.