UNK Boston Celtics NBA Basketball Long Sleeve Shirt Gray Size S UNK Boston Celtics NBA Basketball Long Sleeve Shirt in gray, size small, is the perfect fan apparel for supporters of the Boston Celtics. The shirt features the official team colors of green, black, and gray, making it a stylish and comfortable choice for basketball enthusiasts. Made with high-quality materials, this shirt is a must-have for any fan of the NBA team.