National League A (NLA) is the top professional ice hockey league in Switzerland. It features teams from various cities competing for the championship title each season. The league is known for its high level of play and attracts both local and international talent. The NLA operates under the Swiss Ice Hockey Federation and consists of 12 teams. Each team plays a regular season followed by playoffs to determine the champion. The league has a strong fan base and contributes to the popularity of ice hockey in Switzerland.