cc7. New in bag. The Nike Tee Boston Celtics 2023-24 Champions T-Shirt is a black short-sleeve shirt featuring the official logo of the Boston Celtics. This officially licensed NBA apparel is designed for adults in size 3XL, making it the perfect choice for fans looking to celebrate the team's championship win. Perfect for basketball enthusiasts and collectors alike, this shirt is a must-have for anyone wanting to show their support for the Boston Celtics in style.