AIK Fotboll is a professional football club based in Solna, a suburb of Stockholm, Sweden. Founded in 1891, it is one of the oldest and most successful clubs in the country. The team plays its home matches at Friends Arena, which has a capacity of around 50,000 spectators. The club's colors are black and yellow, and it has a passionate fan base known as Gnaget. AIK Fotboll competes in the top tier of Swedish football, known as Allsvenskan, and has won numerous league titles and domestic cups throughout its history.