Y-OPTICS MANUFACTURE Co., Ltd. manufactures and sells outdoor clothes and shoes. It operates through the Fashion and Internet Cafe Franchise divisions. The Fashion division offers outdoor functional shoes and clothes through its brands Ryn, Mankato, and Triple Wave. The Internet Cafe Franchise division operates an internet cafe franchising brand under the name 3POP. It also engages in other businesses such as energy technology development, electrical engineering, hotel, and entertainment. The company was founded on January 11, 1999 and is headquartered in Busan, South Korea.