When you buy this tee, you remove 10 kgs of Co2 from the air. The average tee produces about 7 kgs of Co2. Our organic tees are grown and sewn in North America for low carbon miles with approximate Co2 emissions of 5 kg. To help cool the climate, biomass (like plant and tree trimmings) is then converted into Co2 bricks that are buried underground so that your purchase removes more Co2 than it produces. More Details of Benefits and Features