Penner's has been doing business ever since 1916. Located in San Antonio, Texas, it operates as one of the largest suppliers of authentic guayaberas. The firm specializes in selling men's shirts, including Mexican shirts made in Merida, Yucatan and Mexico. Additionally, Penner's sells men's Hawaiian, Cuban, retro, Mexican wedding, aloha shirts, as well as Mexican clothing and more. The Better Business Bureau (BBB) accredited business carries a large selection of four pocket Mexican guayabera shirts..