As part of NBA 75, Nike Released the City Edition Collection called "Mixtapes" for every single team in NBA.
For the Ce...ltics, their City Edition is a mix of the 1950s era, the infamous Bird era in the 80s, and their retired numbers on the Garden.
When you’re one of the original franchises still remaining from the NBA’s first season, you go all the way back for your 75th. Boston is wearing green with “CELTICS” arched across the front in green with a drop shadow similar to what the club wore during the 1949-50 season. The sides of the shorts feature a triangle design with a shamrock as they did from 1946-49, inside the shamrock is “RED” a tribute to legendary Celtics coach Red Auerbach. The opposite side of the shorts features the Celtics’ 75th anniversary logo. (Nike.com)