F50 unit. f50tunint is Messi's first pair of Adidas sneakers. This is a football shoe introduced by Adidas in 2004, which adopts an innovative detachable sole design, allowing players to adjust according to different venues and competition needs. Messi first put on F50Tunit sneakers in 2004, and has been cooperating with Adidas since then to become the spokesperson of Adidas football shoes.