Isaiah Hartenstein is an American-German professional basketball player for the Oklahoma City Thunder of the National Basketball Association. He has played for the Germany men's national basketball team. Represent your favorite player - Isaiah Hartenstein with the best selection of the latest Jaylen Brown apparels and oufits from CavaliersPlayerOnline. You can proudly show your support with a new Isaiah Hartenstein Cavaliers Jersey that displays his name and number on the back combined with official team colors and logo. Celebrate his success and add to your collection with official Isaiah Hartenstein Cavaliers gear today.