Nittaku 3-Star Premium 40+ Balls, 3 Balls, Table Tennis Ping Pong, Made in Japan
It is made with special poly material available only to Nittaku. The label on the ball says "Nittaku Premium 40+" and "Made in Japan". Nittaku has a 2-star poly ball made in Japan, the Nittaku 2-Star Superior 40+ Ball.