Renfro Brands will expand operations in Mount Airy. The company plans to invest approximately $2 million in equipment and infrastructure at its Riverside Drive facility and create up to 35 new jobs. Renfro Brands was founded in Mount Airy in 1921 and is known as a leading designer, manufacturer and marketer of quality socks and legwear licensed to brands including Polo, Ralph Lauren, Dr. Scholl’s, Chaps, New Balance, Merrell and Sperry. . Renfro also owns premium fashion and performance brands including K. Bell, HOTSOX and Copper Sole.