Sport a retro look with the Mitchell & Ness Menâs Boston Celtics Vintage Team Origins Satin Full-Snap Jacket. The polyester material provides a comfortable feel, while the embroidered team logos show off your Celtics pride. Mitchell & Ness Menâs Boston Celtics Vintage Team Origins Satin Full-Snap Jacket Kelly Green, Medium - NBA Outerwear Adult/Youth at Academy Sports