NWT. The NBA New York Knicks Tee featuring Kristaps Porzingis Number 6 is an officially licensed shirt from NBAStore.com. This basketball-themed shirt in blue color is perfect for young fans of the New York Knicks and Porzingis. Made for regular season games, this shirt in size Youth Medium (10/12) is suitable for both boys and girls who want to support their favorite team and player in style.