Swim Boxer Medium Yellow Gradient is produced using Eco Chiffon 50 by Frizza, a completely recycled fabric. Made with the highest quality recycled polyester. Lightweight and resistant, the production of recycled PET is estimated to reduce CO2 emissions by 32% compared to normal polyester. Additionally, recycled polyester can help reduce the extraction of crude oil and natural gas from Earth to produce more plastic. As polyester accounts for around 60 percent of world PET production, roughly double what is used in plastic bottles, the development of a non-virgin supply chain for polyester fiber has the potential to have a huge positive impact on reducing the consumptions of global energy and resources. Swim Boxer Medium Yellow Gradient is also Oeko-Tex Standard 100 certified. This certification guarantees that the manufacturer of the fabric we use is proven as environmentally friendly both in the processes and in the factories, as well as tested for the absence of harmful substances.