is an American athletic footwear brand, founded in 1906, and is considered one of the world's largest and oldest manufacturers of athletic footwear and apparel, and the leading manufacturer of cutting edge tennis shoe. New Balance supplies a number of clubs and teams with sports clothing, most notably Liverpool, Porto, Celtic, Seville, Athletic Bilbao, Nantes, Saudi Al-Nasr, as well as the Republic of Ireland national football team, Costa Rica football team, Panama football team.