Founded by four American friends who were living in Shanghai at the time, C4 is an apparel company that creates and sells eco-friendly plastic belts. Headquartered in Atlanta, Georgia, C4 stands for “Choose your Color. Choose your Cause.” Made from soft and durable thermoplastic elastomer (TPE) plastic, C4 belts are not only customizable but also allow customers to give back to a charity of their choice. C4 donates proceeds from each sale to a charitable organization and backs various causes throughout each year. Currently, the company supports the Boys and Girls Clubs of America, the Human Rights Campaign, Project Kaisei, and Kiva.

Drawing inspiration from fashion, music, and Asian culture, C4 belts are waterproof, easy to clean, and fully recyclable. They can be cut to size to fit any waist and do not fray or wear over time like leather belts. Additionally, the buckles can be interchanged, creating a total of 400 different color combinations.