American Recreation Products, a division of Kellwood Company, has bought Isis, an outdoor company for women’s performance and casual clothing. Isis was founded in 1998 and has its own sizeable retailer network. Kellwood plans to expand its distribution channels, including specialty retailers and e-commerce. Terms of the acquisition were not released. Kellwood is an affiliate of Sun Capital Partners, a private investment firm that specializes in leveraged buyouts and investing in companies.