Mens Boston Celtics Authentic Jerseys are available at Fanatics.com. With an authentic Boston Celtics Mens jersey, you'll show you're serious about your fan loyalty. Authentic Mens Boston Celtics uniforms feature moisture-wicking technology and mesh comfort zones to keep you cool while rooting on your team. Authentic jerseys are a cornerstone in any fan's collection of sports gear. Boast about your fandom with new Boston Celtics authentic jersey from Fanatics.com.