At the very beginning of the club's football history, the players used to wear black jerseys with a big "S" on the front. They then played for two years in black-and-white striped jerseys, which they returned to, wearing them as a reserve strip, for two years in 1996. In 1906, club president Dr. Petřík was in England where he saw the famous Woolwich Arsenal play with their red jerseys and decided to bring one set to Prague.