The answer to the crossword for the term 'FIRST NAME IN LIFE VESTS' is MAE (3 letters). Mae is a female given name of English origin, derived from the Hebrew name Miriam. It is also a short form of other names such as Margaret, Mary, and Marlene. Mae is often used as a nickname for someone named Mary or Margaret. In addition, Mae is the first name in the name of the company, Life Vests, which produces life jackets and other safety equipment for water sports.