Muscle fit T-shirt by Majestic, You can never have too many, Crew neck, Slim-cut sleeves, Boston Red Sox print, Close-cut muscle fit, What all those protein shakes and arm days were for, Exclusive to ASOS. Majestic Athletic has come a long way from its initial conception in 1976. What started life as a knitwear company producing baseball jerseys for local college teams in Tampa, has now become a major retro brand. Made in the US, Majestic Athletics baseball jerseys and jackets come with full Major League Baseball rights kudos.