The "correct swing" junior model derived from accumulated junior data.
1. New Lie angle design to achieve the correct swing plane for your height. The flat lye angle and round sole make it easier to swing with the correct swing plane that fits your height.
2. Adopts a new soft rubber grip that enhances grip and increases distance. The hardness of the rubber grip is 10% softer than previous and improved grip.
3. JUST FLEX DESIGN FOR JUNIOR SPEED: Thoroughly investigated for junior swing speeds. Adopts the "Just Flex Shaft" which is suitable for the average head speed of 7.8 - 9.8 ft (24 - 30 m) per sec for junior golfers. J135: Adopts a shaft that is ranked more than a regular womans club. J120: Uses a shaft that is 2 rank softer than a typical female club.