During the first years the club had two kits, one with blue and white horizontally striped jerseys and white shorts, and a red kit in the same fashion. These were used interchangeably up until at least 1906. It is unclear exactly when the current kit was adopted, but it was in use by the time Lyn had claimed their first Norwegian Cup in 1908. The socks have traditionally been red. White socks have also been used, most recently from the beginning of the 1990s until 2004, when the red socks were brought back.