The Zan Navi was designed to be the korean answer to the Duncan Throw Monkey. Overseas, it is even sold with a counterweight. The were not allowed to sell them for Freehand play in the US, which would violate Duncan's patent.
This one had a big following, and was very good for all styles of play. Rubberized outer body with a plastic inner body.
The color pictured was released around October of 2004.