Aviator Nation is expanding its partnership with Major League Baseball , building on what began as a limited experiment into one of the brand’s most successful licensing initiatives. Launching Thursday, the California-based label will introduce 13 team capsules, nearly doubling last year’s offering following strong demand and sell-through. The lineup includes the Atlanta Braves, Arizona Diamondbacks, Boston Red Sox, Chicago Cubs, Detroit Tigers, Houston Astros, Los Angeles Dodgers, New York Mets, New York Yankees, Philadelphia Phillies, San Diego Padres, San Francisco Giants and the Seattle Mariners. Aviator Nation x MLB Courtesy of Aviator Nation “After heavy demand, we are excited to expand our launch to now reach more fans,” said Paige Mycoskie, founder and CEO of Aviator Nation, in a statement.…