In the realm of synthetic materials, nylon is worse for the environment than other fibers when you consider its entire life cycle. A report by the Global Fashion Agenda, a fashion sustainability think tank, says that nylon has a higher environmental impact per kilogram of material than rayon, spandex, and polyester because more greenhouse gases are emitted during its manufacturing process. In Lululemon's 2020 Impact Agenda, the company said that about 50% of its carbon impacts come from its fabrics. So switching to less-carbon-intensive materials could go a long way toward improving the company's overall carbon footprint. Lululemon aims to reduce carbon emissions across its global supply chain by 60% by 2030 as part of its broader sustainability goals.