Be bold this season and cheer on the Celtics with the latest vintage style Letterform Crew. With all-over custom printed graphics, a enzyme wash for extra comfort and embroidered brand logo, you are sure to be the ultimate supporter this season! The Boston Celtics were born in '46 and got their name in honour of the old Original Celtics in New York who played from '14-'39. The Celtics world famous leprechaun has served as the team logo since the 50's.