HEAD IG Gravity 25 Junior Junior Tennis Racquets : The Head IG Gravity 25 Junior tennis racquet is the perfect starter for up and coming tennis players. Developed with current technologies to match todays modern game, this junior racquet offers a lightweight and durable option for players between ages 8 and 10 years of age. Features HEADs advanced carbon composite technology. Lightweight frame with Innegra(TM) high-performance fibre.