The Indian Super League (ISL), officially known as the Hero Indian Super League for sponsorship reasons,is an Indian professional league for men's association football clubs. At the top of the Indian football league system, it is the country's primary football competition, organised by the All India Football Federation (AIFF) and their commercial partners Football Sports Development Limited (FSDL). The league currently comprises 11 clubs. Each season of the tournament generally runs from October to March. During the league stage of the competition, each club plays against all the other clubs in a round-robin style. At the end of the league stage, the team with the most points gets declared the Premiers and presented with a trophy named League Winners Shield, along with the runners up to play in the play-offs, while the next best four clubs qualify to play qualifying playoffs to join the top two in the playoffs. The season then culminates with the ISL Final to determine the Champions who are presented with the ISL Trophy.